What You Will Need

• Glass container with a lid
• Kitchen thermometer
• One Narex Sachet (buy here)
• About 1.5 L of milk
• Yogurt maker (optional, but useful if you plan to make yogurt regularly)

Starter Preparation

1. Boil 150 ml of cow’s milk for 10–15 minutes. In practice, boiling for 3–5 minutes is enough to eliminate unwanted bacteria.
2. Cool the milk to 39–40°C. Remove the foam and pour the milk into a sterilized glass container. A strainer works well to filter out any remaining foam.
3. Add the contents of one Narex sachet to the milk and mix thoroughly.
4. Seal the container tightly and place it in the yogurt maker. Maintain a temperature of 37–39°C for 22–24 hours.
5. Open the container and check the consistency. If there are lumps, the temperature was likely too high; next time, lower it by 1–2 degrees.
6. Refrigerate the starter for at least 3–4 hours, then stir well until smooth.
7. Store at 2–6°C for up to 7 days.

Yogurt Preparation

1. To make the Narine dairy product, use 1 liter of milk.
2. Boil the milk, then cool it to about 39°C and add 2 tablespoons of starter for each liter of milk.
3. From one portion of starter, you can prepare about 4–5 liters of yogurt.
4. Ferment the mixture at 37–39°C for 5–7 hours.

Fermentation time and temperature affect the final texture and taste. A higher temperature and 7-hour fermentation will result in a thicker, tangier yogurt. At 35–37°C for 5 hours, the yogurt will be milder and thinner, similar to a drinking yogurt.

After fermentation, check the texture. It should resemble a gelatin-like consistency. The more you stir it, the thinner it becomes — as described by Levon Erzinkyan, the discoverer of the Narine strain.

Transfer the yogurt to the refrigerator and store it at 2–6°C for up to 2 days. Mix before each use and chill before serving for the best taste.

Drink one glass in the morning and one in the evening. If you also take Narex capsules, the yogurt enhances their effect. The bacteria in capsules are freeze-dried (inactive) and need time to “wake up” in the gut, while in the yogurt they are already active and start working immediately.

Share or Multiply the Starter

If you want to share the starter, one jar is enough for 4–5 liters of yogurt. Boil milk, cool it, mix in two tablespoons of starter, and leave it to ferment. A yogurt maker isn’t necessary for this step — you can simply wrap the container in a warm blanket overnight. In the morning, your yogurt will be ready.

Ways to Enjoy Narine Yogurt

You can mix it with nuts, use it as a healthy salad dressing, blend it into a smoothie with seasonal fruits, or combine it with muesli for a nutritious breakfast.

That’s it — your homemade Narine yogurt is ready!

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However, if a doctor diagnoses a bacterial infection or a secondary bacterial infection develops following a viral illness, antibiotic treatment may be necessary. In such cases, it is useful to understand not only how to take the medication correctly, but also what may happen to the gut microbiota during treatment and what role an appropriately selected probiotic may play.

Why should antibiotics not be used “just in case”?

Antibiotics are among the most important tools of modern medicine, but they should only be used when there is a clear indication.

Unnecessary and inappropriate use of antibiotics accelerates the development of antimicrobial resistance. This does not mean that the human body becomes resistant to the medicine. Instead, bacteria can develop mechanisms that allow them to survive antibiotic treatment, making certain infections more difficult to treat in the future.

For this reason, antibiotics should be taken according to a doctor’s instructions, at the prescribed dose and for the recommended duration. Antibiotic treatment should not be started independently, leftover antibiotics from previous treatments should not be used, and antibiotics should not be taken for an ordinary cold.

How do antibiotics affect the gut microbiota?

Antibiotics are used to target bacteria responsible for an infection, but their effects may also involve some of the bacteria naturally present in the digestive tract.

The extent of these changes depends on the type of antibiotic, its spectrum of activity, the dose, treatment duration, previous antibiotic courses and the individual composition of the microbiota.

This does not mean that every course of antibiotics “destroys the gut flora”. However, antibiotic treatment may reduce microbial diversity and temporarily alter the proportions of different bacterial groups. Some people may experience gastrointestinal symptoms such as loose stools or diarrhoea, abdominal discomfort, nausea or bloating.

One of the better understood complications is antibiotic-associated diarrhoea, commonly abbreviated as AAD.

Antibiotic treatment and Clostridioides difficile

Antibiotic treatment is also one of the major risk factors for infection with Clostridioides difficile.

This bacterium may multiply in the intestine particularly when the natural microbial community has been disrupted. Infection can cause diarrhoea and inflammation of the colon and, in severe cases, may lead to serious complications.

Not every episode of diarrhoea during antibiotic treatment means that C. difficile infection is present. However, if diarrhoea is severe or persists after treatment, particularly when accompanied by fever, significant abdominal pain, dehydration or deterioration in general health, medical advice should be sought.

Is it worth taking a probiotic during antibiotic treatment?

Research indicates that some specific probiotics may reduce the risk of antibiotic-associated diarrhoea. This does not mean, however, that every product described as a probiotic will have the same effect.

In probiotic therapy, the specific strain is particularly important, rather than only the genus or species of the microorganism.

Among the better-studied microorganisms in the context of preventing antibiotic-associated diarrhoea are Lacticaseibacillus rhamnosus GG ATCC 53103, still frequently referred to by its former name Lactobacillus rhamnosus GG, as well as certain preparations containing Saccharomyces boulardii.

Results obtained for one strain cannot automatically be applied to other strains of the same species or to all probiotic products.

Recommendations may also differ between patient groups. Factors such as age, health status, the antibiotic being used and the individual risk of complications may all be relevant.

Probiotic before or after an antibiotic? What interval should be maintained?

This is one of the most common questions during antibiotic treatment.

For probiotics containing bacteria, it is generally recommended to maintain a time interval between the antibiotic and the probiotic. In practice, an interval of approximately 2–3 hours is often used unless a doctor, pharmacist or the manufacturer of the specific product recommends otherwise.

It should therefore not be assumed that every bacterial probiotic strain can be taken at exactly the same time as an antibiotic.

The situation is different with Saccharomyces boulardii. It is a yeast rather than a bacterium, so antibacterial antibiotics do not affect it in the same way as bacterial probiotics. Nevertheless, the method of use should always follow the instructions for the particular preparation.

When a probiotic is used with the aim of reducing the risk of antibiotic-associated diarrhoea, available studies suggest that starting supplementation early during antibiotic treatment may be more relevant than beginning it several days after the antibiotic course has already ended.

How long should a probiotic be taken after antibiotics?

There is no single universal rule stating that a probiotic must be taken for one, two or three months after every course of antibiotics.

The duration of supplementation depends on the specific strain, the product, the purpose of supplementation and the individual situation.

In studies examining the prevention of antibiotic-associated diarrhoea, probiotic regimens often cover the period of antibiotic treatment and a defined period after it has ended.

At the same time, current evidence is insufficient to conclude that routine supplementation with any probiotic after antibiotics always accelerates complete restoration of the original composition of the gut microbiota.

Instead of following the principle that “longer is always better”, it is more appropriate to consider the specific strain, the manufacturer’s recommended duration of use and individual circumstances.

How to support the diet after antibiotic treatment

After completing antibiotic treatment, it is also worth paying attention to diet. The gut microbiota uses a wide range of nutrients from everyday food, which is why dietary diversity is important.

If health permits, a varied diet containing vegetables, fruit, whole grains, legumes, nuts and seeds can gradually be reintroduced or maintained. These foods provide different types of dietary fibre that may be used by intestinal microorganisms.

Naturally fermented foods such as yoghurt, kefir or fermented vegetables may also form part of the diet. It is important to remember, however, that fermented food and a probiotic containing a precisely identified strain are not the same thing.

People using the Narine strain may also prepare a homemade fermented milk product using an appropriate starter and according to the preparation instructions.

Narine and antibiotic treatment – why the specific strain matters

Narex products contain the specifically identified strain Lactobacillus acidophilus n.v. Er 317/402 Narine.

This is a different strain from LGG or Saccharomyces boulardii, which means that research results concerning those microorganisms should not automatically be attributed to Narine. This is one of the key principles when interpreting probiotic research: an observed effect should be linked to the strain that was actually studied.

If products containing Narine are used as part of supplementation during antibiotic treatment, they should be used according to the instructions for the specific product, including an appropriate interval from the antibiotic where applicable.

Probiotic and antibiotic – the specific strain matters most

Antibiotics are essential in the treatment of many bacterial infections, but their use may influence the gut microbiota and may be associated, among other things, with a risk of antibiotic-associated diarrhoea.

Not all probiotics have the same properties. When choosing a preparation, it is worth checking the complete strain designation, the context in which that strain has been studied, the recommended method of use and the dosage instructions.

With bacterial probiotics, a time interval of a few hours from the antibiotic is generally maintained during antibiotic treatment. At the same time, there is no universal recommendation that everyone should take any probiotic for several months after every course of antibiotics.

If severe or persistent diarrhoea, fever, significant abdominal pain or other concerning symptoms develop during or after antibiotic treatment, medical advice should be sought rather than simply extending probiotic supplementation independently.

This material is for educational purposes only and does not replace medical consultation. A dietary supplement is not a medicinal product and cannot replace prescribed treatment.

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Resistant to Stomach Acidity

An effective probiotic must survive stomach acid and adhere to intestinal walls — Narine does both. Thanks to these properties, it reaches the large intestine, where it temporarily colonizes and supports microbial balance. This promotes a healthy gut microbiota and helps maintain its stability.

Narine Probiotic Therapy Normalizes Gut Microbiota

Through the production of lactic acid and bacteriocins such as lactoline, lactocidin, and acidophilin, Narine can inhibit the growth of pathogenic bacteria and protect against dysbiosis. At the same time, it creates favorable conditions for the proliferation of beneficial commensal bacteria. A balanced microbiota aids digestion, ferments dietary fiber to produce butyric acid that nourishes intestinal cells, and synthesizes certain vitamins. A healthy microbial balance, known as eubiosis, is the foundation of immunity, metabolic health, and even mental well-being.

When to Consider Supplementing with Narine

• During gastrointestinal infections accompanied by diarrhea, vomiting, or nausea.
• During and after antibiotic therapy, which disrupts the natural gut microbiota and increases the risk of secondary infections.
• In periods of chronic stress, which can trigger dysbiosis and related issues such as irregular bowel movements or digestive discomfort.
• In cases of stomach inflammation, including those linked to Helicobacter pylori, where medication and altered acidity affect the intestinal microbiota.

Probiotic therapy may also strengthen immunity, as about 70% of immune cells reside in the intestines, forming the gut-associated lymphoid tissue (GALT), part of the broader mucosal immune system (MALT). For this system to function properly, it requires stimulation and regulation — roles fulfilled by a balanced microbiota.

How to Use Narine Probiotic

Always consult your doctor before starting supplementation. If there are no contraindications, Lactobacillus acidophilus can be introduced in several ways. Besides traditional capsule or sachet supplementation dissolved in lukewarm water, Narine can be added to everyday meals.

A simple option is to blend it into a smoothie. Mix your favorite seasonal fruits with milk, yogurt, or kefir, then add the contents of a capsule or sachet and blend until smooth. Drink it as a snack or with lunch.

Alternatively, mix Narine into yogurt with muesli, fruit, and nuts. Stir the probiotic into yogurt first, then add the remaining ingredients. If you prefer drinkable yogurt, sour milk, or kefir, simply add Narine to enrich these drinks with beneficial bacteria.

You can also make a probiotic salad dressing by combining yogurt or olive oil with honey, balsamic vinegar, garlic, and herbs. Finally, Narine starter cultures (fermentation strains) can be used to prepare homemade yogurt using milk as a base — a natural and healthy way to include probiotics in your daily diet.

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Artykuł What Is the Narine Bacterium? pochodzi z serwisu Narex.

Why is it worth using the Narine probiotic?

Narine can survive under extremely difficult conditions. It is resistant to stomach acid, bile, and even certain antibiotics and chemical agents. This allows it to pass through the entire digestive tract and reach the intestines in an active form, increasing its effectiveness. This is crucial, as many probiotic strains do not survive the journey through the stomach.

Thanks to this resistance, Narine remains effective even when the body is weakened, such as during infections, stress, antibiotic therapy, or intensive pharmacological treatment. For this reason, the strain is highly valued in dietary supplements. It helps maintain healthy intestinal microflora even in challenging situations for the body.

Digestive support

Narine supports digestion in several ways. It forms a protective layer on the stomach and intestinal mucosa, helping regeneration and reducing irritation. This barrier protects against harmful substances and supports proper peristalsis, leading to better comfort and regular bowel movements.

People suffering from diarrhea, constipation, bloating, or irritable bowel syndrome often notice improvement after regular use of products containing this probiotic. Narine helps stabilize bowel function and improve overall digestive comfort. It can therefore be used both preventively and therapeutically.

Better absorption of nutrients

This bacterium supports intestinal health and thus improves nutrient absorption. A healthy intestinal barrier enhances the uptake of vitamins (especially B-group vitamins) and minerals such as iron, calcium, and magnesium. This allows the body to make better use of nutrients from food.

As a result, overall well-being improves — more energy, better immunity, and healthier skin. Proper nutrient absorption also supports the functioning of the nervous, hormonal, and immune systems.

Check out Narex Caps with the Narine strain.

Anti-inflammatory properties

Narine has anti-inflammatory effects, helping reduce inflammation within the digestive tract. It soothes the intestinal mucosa and may be beneficial for inflammatory bowel diseases such as ulcerative colitis or Crohn’s disease. This makes it especially valuable for individuals with chronic digestive issues.

Additionally, this strain promotes the regeneration of mucous membranes, speeding up recovery after digestive problems such as food poisoning or intensive treatments. Mucosal regeneration is essential to maintain intestinal barrier integrity and prevent further damage.

Strengthening immunity

Narine stimulates the body’s natural defense mechanisms. It promotes the production of interferon — a protein that plays an important role in fighting viruses and bacteria. Interferon activates immune cells, enabling a faster response to infections.

Regular use of this strain can strengthen immunity, especially during periods of higher infection risk, such as autumn, winter, or after antibiotic therapy. People taking Narine often experience fewer infections and recover more quickly. This probiotic can be an important part of daily health prevention.

Protection against pathogens

Narine bacteria help protect the body from harmful microorganisms. They secrete substances that inhibit the growth of pathogens such as E. coli, Staphylococcus aureus, and Candida yeast. They act by competing for space and nutrients in the intestines, effectively displacing harmful microbes.

At the same time, they do not damage beneficial bacteria, which is vital for maintaining microbial balance. This provides natural protection without disrupting healthy gut flora. Narine creates an environment in which beneficial bacteria dominate over harmful ones.

Effective intestinal colonization

Thanks to its high resistance to gastric acids and medications, Narine can effectively colonize the intestines. This means it not only reaches the intestines but also establishes itself there, multiplying and creating a favorable environment for the microbiome. This process is crucial for long-term probiotic effects.

It is particularly valuable after antibiotic treatment, when natural gut flora has been weakened. Narine helps rebuild the microbiota and restore balance. It can therefore be used both temporarily and as part of long-term health maintenance.

Summary

Narine is a probiotic strain distinguished by its resilience, effectiveness, and wide range of benefits. It supports digestion, immunity, nutrient absorption, and protection against harmful microorganisms. It is safe and well-tolerated, suitable for people of all ages.

It can be used by both children and adults, either preventively or as a complement to treatment. Narine is found not only in dietary supplements but also in functional foods and cosmetics. Its versatility makes it one of the most valuable probiotics available on the market.

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In reality, when it comes to probiotics, what matters is not only the presence of bacteria, but above all the specific strain, its quantity, the product form, storage conditions, and the way it is used.

Below, we clarify some of the most common facts and myths about probiotics.

Myth 1. All probiotics are the same

This is one of the most common misconceptions.

The term “probiotic” covers many different microorganisms. Even bacteria belonging to the same species may represent different strains, and their properties do not necessarily have to be identical.

A product label may list the genus and species of the bacteria, but the specific strain designation is also particularly important.

For example:

Lactobacillus acidophilus n.v. Er 317/402 Narine

Lactobacillus indicates the genus, Lactobacillus acidophilus the species, while Er 317/402 identifies the specific strain. Narine is its commonly used name.

Results obtained in studies on one strain should not automatically be attributed to all bacteria belonging to the same species.

Fact: when choosing a probiotic, it is worth checking the full strain designation, not only the bacterial genus.

Myth 2. The more strains a probiotic contains, the better it is

The number of strains alone does not determine the quality of a product.

A preparation containing several or even a dozen different microorganisms is not automatically better than a single-strain product. What matters most is the precise identification of the microorganisms used, their quantity, and the documentation relating to the specific strain or combination of strains.

Probiotics can be either single-strain or multi-strain products. Both forms may have their place, so the length of the ingredient list should not be the main purchasing criterion.

Fact: more strains do not automatically mean a better probiotic.

Myth 3. The best probiotic is the one with the highest CFU count

CFU, or Colony Forming Units, refers to the number of viable microorganisms capable of forming colonies.

The CFU count is an important parameter, but a high number shown on the packaging should not be considered in isolation from the other characteristics of the product.

Other relevant factors include:

• the specific strain,
• the recommended serving,
• the way the product is used,
• the product form,
• additional ingredients,
• product stability,
• required storage conditions.

For this reason, comparing two probiotics only by the number of CFU may lead to misleading conclusions.

Fact: CFU count is important, but it is not the only factor that determines the characteristics of a probiotic product.

Myth 4. Probiotics are available only in capsules

Capsules are one of the most popular forms of probiotic supplements, but they are not the only option.

Products containing live microorganisms may also be available as powders or sachets. The form should primarily match the way the product is intended to be used and the user’s preferences.

For example, Narex products containing the Narine strain are available both in capsules and sachets. According to the manufacturer’s instructions, Narex Sachets can also be used to prepare a fermented milk product.

Fact: a probiotic does not have to come in capsule form.

Myth 5. Every fermented food is a probiotic

Yogurt, kefir, kimchi, sauerkraut, and other fermented foods may contain live microorganisms. However, this does not mean that every fermented food automatically meets the definition of a probiotic.

To use the term probiotic precisely, the microorganism needs to be appropriately characterized and present in an adequate amount.

For this reason, the terms “fermented food” and “probiotic product” should not be treated as synonyms.

Fermented foods can nevertheless be a valuable part of a varied diet.

Fact: fermented foods may contain live microorganisms, but not every fermented food is automatically a probiotic.

Myth 6. Probiotics and prebiotics are the same thing

The names sound similar, but they refer to two different concepts.

A probiotic contains specific live microorganisms.

A prebiotic is a substrate that is selectively utilized by host microorganisms.

There are also products that combine both components. Such combinations may be described as synbiotics when they meet the relevant criteria.

One example within the Narex range is Narex Duo, which combines the Lactobacillus acidophilus n.v. Er 317/402 Narine strain with inulin.

Fact: probiotics and prebiotics are two different things.

Myth 7. Every probiotic should be taken for the same length of time

There is no single universal duration of use for all probiotics.

Products differ in strain, microorganism count, recommended daily serving, and manufacturer instructions. Therefore, the recommended use of one product should not automatically be applied to another.

The first step should always be to check the product label and follow the recommended serving instructions.

People taking medication, pregnant or breastfeeding women, and people with health conditions should consult a doctor if they have any doubts about using dietary supplements.

Fact: the way and duration of use depend on the specific product and the individual situation.

Myth 8. Every probiotic should be used in the same way during antibiotic therapy

Antibiotic therapy is one of the situations in which consumers often become interested in probiotics, but not all probiotic products should be treated in exactly the same way.

Different microorganisms may react differently to particular substances, so the way a product is used should take into account the specific strain, the preparation, and the manufacturer’s instructions.

There is no single rule concerning timing, the interval between the antibiotic and probiotic, or supplementation duration that can automatically be applied to every product.

If a probiotic is being considered during pharmacological treatment, it is worth checking the instructions for the specific product and, when necessary, consulting a doctor or pharmacist.

Fact: during antibiotic therapy, the specific product and its recommended use matter more than the simple presence of any probiotic bacteria.

Myth 9. Storage conditions do not really matter

Probiotics contain live microorganisms, which means storage conditions may be relevant to maintaining the declared characteristics of the product.

This does not mean, however, that every probiotic has to be stored in the same way. Requirements depend on the specific product and the technology used by the manufacturer.

Some preparations may be stored at room temperature, while others require refrigeration.

The most important rule is therefore to follow the storage instructions provided on the packaging.

The same principle applies to products containing the Narine strain: storage conditions should be checked for the specific product variant.

Fact: storage requirements are one of the parameters worth checking before buying a probiotic.

Myth 10. Narine is the name of all Lactobacillus acidophilus bacteria

Narine is not a general name for Lactobacillus acidophilus bacteria.

It is the commonly used name of a specific strain:

Lactobacillus acidophilus n.v. Er 317/402 Narine.

Different strains may exist within the Lactobacillus acidophilus species, each with its own designation and characteristics.

If a product label lists only “Lactobacillus acidophilus,” this does not automatically mean that the product contains the Narine strain.

The history of Er 317/402 Narine is connected with Armenia and the research conducted by the team of Prof. Levon Erzinkyan. Narex LLC has been developing products based on this strain since 1999.

Myth 11. A probiotic supplement can replace a varied diet

A dietary supplement is intended to complement the daily diet, not replace it.

The microbiota is influenced by many aspects of diet and lifestyle. Dietary variety, adequate fibre intake, and the presence of fermented foods are among the factors worth considering.

A probiotic can be part of the daily diet, but it does not replace balanced nutrition or prescribed medical treatment.

Fact: supplementation should be treated as one element of a broader approach to diet rather than as a substitute for its foundations.

How to choose a probiotic

Instead of focusing only on advertising claims, the number of strains, or the largest CFU value shown on the front of the package, it is worth reading the label carefully.

When comparing products, pay particular attention to:

• Full strain designation – this helps identify exactly which microorganism is present in the product.
• CFU count – this indicates the number of viable microorganisms.
• Recommended daily serving – the number of bacteria in one capsule does not by itself indicate the amount intended for daily use.
• Product form – a capsule or sachet may be more convenient depending on individual preferences.
• Additional ingredients – it is worth checking the complete composition, not only the bacterial strain.
• Storage conditions – particularly in the case of products that require a specific temperature.
• Instructions for use – the recommended method may differ between individual products.

Narine probiotics – one specifically identified strain

Narex probiotic products are based on the strain Lactobacillus acidophilus n.v. Er 317/402 Narine.

The range includes different variants containing the same strain: Narex Caps, Narex Forte, and Narex Duo in capsule form, as well as Narex Sachets in powder form. The products differ, among other things, in CFU count, form, and additional ingredients.

This makes it possible to compare products based not only on the number of bacteria or strains, but also on the exact microorganism used, its quantity, and the form of the product.

Key facts about probiotics

Choosing a probiotic should not be based on a single number shown on the packaging. What matters is the complete product: the specific strain, its designation, CFU count, serving size, composition, form, storage conditions, and instructions for use.

Not all probiotics are the same, a greater number of strains does not necessarily mean a better product, and not every fermented food is automatically a probiotic.

The most important principle is simple: instead of looking for the “strongest probiotic,” check what exactly the product contains.

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The gut microbiota, meaning the community of microorganisms living in the digestive tract, may influence how the body functions on a daily basis. This does not mean that every case of fatigue is caused by digestive problems. Low energy levels can have many causes, ranging from nutrient deficiencies and chronic diseases to insufficient sleep, dehydration or long-term stress. However, it is worth understanding that the gut is one of the areas that may affect overall well-being.

How Can the Gut Be Connected to Energy Levels?

One important mechanism is the way in which the microbiota processes nutrients from the diet. Gut bacteria are involved, among other things, in the fermentation of dietary fibre. This process produces short-chain fatty acids, including butyrate, acetate and propionate. These compounds are being studied for their potential effects on the gut environment, intestinal barrier and metabolic processes.

A diet low in fibre, irregular meals, excessive consumption of highly processed foods and insufficient intake of vegetables may not support microbiota diversity. In contrast, a more varied diet rich in plant-based foods may support the everyday functioning of the digestive system. This may contribute to digestive comfort, regular bowel movements and the body’s overall functioning.

In practice, many people experience drops in energy not because they simply “lack strength,” but because their daily routine is chaotic. Coffee instead of breakfast, long breaks between meals, a quick sugary snack, insufficient water and a heavy evening meal can contribute to drowsiness, a feeling of heaviness and reduced concentration. The gut also responds to this kind of routine.

The Gut–Brain Axis: Why the Stomach Reacts to Stress

The gut and the brain are connected through the so-called gut–brain axis. This communication involves the nervous and immune systems, hormones and compounds produced by the microbiota. This is why stress so often affects the digestive system. Before an important meeting, examination or journey, a person may experience cramps, abdominal rumbling, loss of appetite or a sudden need to use the toilet.

This relationship also works in the opposite direction. When the digestive system is overloaded and symptoms such as discomfort, bloating, irregular bowel movements or a feeling of heaviness occur, concentration and comfort throughout the day may also decline. It is difficult to feel light and active when the body is constantly signalling discomfort in the abdominal area.

However, this does not mean that probiotic supplementation alone will solve the problem of fatigue. It is better to view gut health as part of a broader picture. Diet, sleep, hydration, stress, physical activity and a regular daily routine all play an important role.

Can a Probiotic Increase Energy Levels?

A probiotic should not be treated as a product that directly “provides energy.” A dietary supplement cannot replace sleep, balanced meals, medical treatment or proper diagnosis. It may, however, form part of everyday care for the gut microbiota, particularly during periods when the body is under greater strain, such as after antibiotic treatment, an infection, a dietary change or while travelling.

Because the gut microbiota participates in processes related to digestion, metabolism and gut–brain communication, taking care of the gut may indirectly support the body’s everyday functioning. A cautious approach is important, however. It should not be claimed that a probiotic will eliminate fatigue or improve energy levels in every person. These experiences depend on many different factors.

What Supports Gut Health and More Stable Well-Being?

Basic everyday habits are the most important. It is advisable to eat regularly, drink an appropriate amount of water and gradually increase the amount of fibre in the diet. Good choices include vegetables, fruit, oats, groats, wholegrain bread, nuts, seeds, pulses and fermented dairy products, provided they are well tolerated.

It is also important not to increase fibre intake too rapidly. In people with sensitive digestive systems, this may result in bloating and discomfort. It is better to introduce changes gradually and observe how the body responds.

Sleep also affects energy levels. Late, heavy evening meals, eating at night, alcohol and consuming large amounts of caffeine in the afternoon may reduce the quality of recovery. Poor sleep often leads to stronger cravings for sugary snacks the following day, which may contribute to further fluctuations in energy.

When Does Fatigue Require Medical Advice?

When fatigue persists for a long time, becomes more severe or occurs together with other symptoms, it is advisable to consult a doctor. Particular attention should be paid to symptoms such as weight loss, chronic diarrhoea, blood in the stool, severe abdominal pain, fever, shortness of breath, heart palpitations or a significant decline in mood.

In such situations, supplementation alone should not be relied upon. Fatigue may result from nutritional deficiencies, hormonal disorders, chronic diseases, infections or other health conditions that require proper diagnosis.

Gut Health and Energy Throughout the Day – Can the Gut Microbiota Make a Difference?

The gut may influence energy levels throughout the day, although this effect is usually indirect. The microbiota participates in processes related to digestion, metabolism, immunity and gut–brain communication. Taking care of gut health may therefore be one element of supporting everyday well-being.

It is best to begin with simple measures: regular meals, a greater intake of plant-based foods, proper hydration, sufficient sleep, physical activity and a calmer daily routine. A probiotic may complement such a routine when used in accordance with the manufacturer’s instructions. However, it should not replace a healthy diet, adequate recovery or consultation with a healthcare professional when fatigue persists for an extended period.

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Probiotic therapy should not be random. The specific strain, product form, regularity of use, diet, storage conditions, and the individual condition of the body all matter. In this article, we will go through the most important principles in a simple and practical way.

What is probiotic therapy?

Probiotic therapy involves the use of probiotics, meaning live microorganisms which, when administered in appropriate amounts, may have a beneficial effect on the body. In practice, this most often refers to specific bacterial strains used to support the intestinal microbiota.

The word “specific” is important. A probiotic is not simply a general category of random bacteria. When choosing a product, it is worth paying attention to the full strain name, the number of bacteria per serving, the recommended method of use, and the manufacturer’s instructions.

Narex products contain the strain Lactobacillus acidophilus n.v. Er 317/402 Narine. It is the specific strain, rather than only the general name of the bacterial species, that allows us to better understand what kind of probiotic product we are dealing with.

When is it worth considering a probiotic?

One of the most common situations is antibiotic therapy. Antibiotics are used to treat bacterial infections, but they may also affect the natural intestinal microbiota. For this reason, many people use probiotics during and after antibiotic treatment to support the balance of the digestive system.

Probiotics may also be considered in cases of occasional digestive discomfort, after infections, during changes in diet, while travelling, or when supporting the microbiota as part of everyday preventive care.

However, probiotics should not be treated as a substitute for medical consultation.

If symptoms are severe or recurrent, or are accompanied by pain, fever, blood in the stool, weight loss, or prolonged diarrhoea, a doctor should be consulted. A probiotic may support the body, but it is not intended for self-diagnosis or the treatment of diseases.

Probiotics during antibiotic therapy

A very common question during antibiotic treatment is whether a probiotic can be taken together with an antibiotic. In practice, it is usually recommended to leave a time interval between taking the antibiotic and the probiotic.

This is because antibiotics have antibacterial activity, so taking both products at exactly the same time may not be the best approach.

An interval of several hours is most commonly used, according to the recommendations of a doctor, pharmacist, or product manufacturer.

It is also important not to stop taking the probiotic on the exact day the antibiotic treatment ends. The intestinal microbiota may still need support after the treatment has been completed, which is why probiotic supplementation is often continued for some time afterwards.

In case of any doubts, it is best to consult a doctor or pharmacist, especially when several medications are being taken or when the probiotic is intended for a child, an elderly person, a pregnant woman, or someone with a chronic health condition.

How long should a probiotic be used?

The duration of probiotic supplementation depends on the individual situation and the specific product.

Supporting the microbiota during antibiotic therapy is different from everyday microbiota support or supplementation after a period of weakness or dietary changes.

The most important factors are following the manufacturer’s recommendations and maintaining regularity.

Taking a probiotic for a few days, then stopping it and later using it only occasionally does not provide a good basis for evaluating its effects. Once probiotic therapy is started, it is worth following it consistently for the recommended period.

For Narex products, the minimum recommended course is 2 weeks, while the preferred period is at least one month. This duration makes it easier to assess how the body responds to regular use of the product.

Probiotic form and convenience of use

The form of the product matters because it can influence regularity.

Capsules are convenient for people who prefer a simple solution for everyday use. They can easily be incorporated into a morning or evening routine and taken to work or while travelling.

Sachets may be a good option for people who prefer this form or who want to prepare homemade Narine yoghurt according to the instructions. This approach combines probiotic supplementation with everyday nutrition and may be convenient for people who enjoy fermented foods.

The choice of form should be practical. The best product is one that a person can use regularly and in accordance with the recommended instructions.

The Narine strain in Narex products

The foundation of Narex products is the strain Lactobacillus acidophilus n.v. Er 317/402 Narine.

It is the Narine strain that distinguishes these products from a general approach to probiotics. In probiotic therapy, it is not only the presence of bacteria that matters, but also their precise identification, the form in which they are administered, and the regularity of use.

In Narex products, the Narine strain is available in different forms, including capsules and sachets.

Capsules are convenient for everyday supplementation, while sachets can also be used to prepare homemade Narine yoghurt. This allows probiotic therapy to be adapted to individual lifestyles: some people may prefer straightforward supplementation, while others may choose to combine it with a fermented product prepared at home.

The most important thing is to use the chosen form regularly and according to the instructions provided on the packaging.

Diet during probiotic therapy

Probiotic therapy does not work independently of diet.

If the diet lacks fibre, vegetables, fruit, whole-grain products, and adequate fluid intake, the intestines may not have optimal conditions to function properly.

During probiotic supplementation, it is worth including plant-based foods, regular meals, proper hydration, and limiting highly processed foods.

Useful dietary additions may include oats, groats, vegetables, fruit, nuts, seeds, flaxseed, and fermented foods, provided they are well tolerated.

There is no need to change the entire diet overnight. Small, regular changes that can be maintained over the long term are usually a better approach.

When should extra caution be taken?

Particular caution should be exercised by people with serious chronic illnesses, reduced immunity, those recovering from major medical procedures, pregnant women, young children, and people taking multiple medications.

In such situations, probiotic supplementation should preferably be discussed with a doctor or pharmacist.

Medical consultation is also recommended when digestive symptoms are severe, long-lasting, or regularly recurring. In such cases, the underlying cause of the problem should first be identified.

Probiotic Therapy from A to Z – When to Use It, How Long, and What to Avoid

Probiotic therapy makes the most sense when it is approached consciously.

It is worth paying attention to the specific strain, regularity of use, duration of supplementation, product form, diet, and storage conditions.

During antibiotic therapy, remember to leave an appropriate interval between the antibiotic and the probiotic and to continue supporting the microbiota after the antibiotic treatment has ended, according to the recommendations of a doctor, pharmacist, or product manufacturer.

Narex products contain the strain Lactobacillus acidophilus n.v. Er 317/402 Narine, available in different forms, including capsules and sachets. This makes it possible to adapt probiotic supplementation to individual needs and everyday routines.

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After treatment, many people experience side effects such as bloating, diarrhea, abdominal pain, or weakened immunity. Fortunately, several proven methods can help restore a healthy intestinal microbiota.

Why gut microbiota matters

The gut microbiota is a complex ecosystem of over 100 trillion microorganisms — bacteria, viruses, and fungi — that live in the digestive system. It plays a vital role in digestion, nutrient absorption, vitamin production, metabolism, and immune regulation. A healthy microbiota forms a natural barrier against pathogens, reduces inflammation, and supports immune balance.

How antibiotics affect gut flora

Antibiotics, though effective, act on both harmful and beneficial bacteria. This disrupts microbial balance, allowing pathogenic bacteria or yeasts (e.g., Candida) to grow excessively. The result is dysbiosis, which manifests as diarrhea, bloating, digestive discomfort, and reduced immunity.

How to restore gut microbiota after antibiotics

1. Include probiotics in your diet
   Probiotics are live microorganisms that, when consumed in adequate amounts, bring health benefits. Regular intake helps restore microbial balance.

• • Narine (Lactobacillus acidophilus Er strain 317/402): This highly resistant probiotic survives stomach acid and bile, effectively colonizes the intestines, and restores beneficial bacteria while inhibiting pathogens.

  • Natural probiotic sources: Fermented foods such as sauerkraut, pickles, kefir, and yogurt contain lactic acid bacteria that support gut recovery.

1. Add prebiotics
   Prebiotics are indigestible fibers that serve as food for beneficial bacteria, supporting their growth. Found in onions, garlic, leeks, asparagus, bananas, and whole grains, they help probiotics thrive. When combined with probiotics, they form synbiotics, which support gut recovery even more effectively.
2. Eat a fiber-rich diet
   Fiber promotes fermentation and nourishes gut bacteria. Vegetables, fruits, whole grains, and nuts create an ideal environment for healthy microbiota. Apples, carrots, beans, lentils, flaxseed, and oats are particularly beneficial.
3. Avoid processed foods and sugar
   Highly processed foods rich in sugar and saturated fats promote pathogenic bacteria and yeast growth. Replacing sweets and fast food with natural, nutrient-dense products helps restore gut balance.
4. Supplement with omega-3 fatty acids
   Omega-3s from fish, flaxseed, and walnuts have anti-inflammatory properties that support intestinal healing after antibiotic use.
5. Support with zinc and vitamin D
   Zinc aids intestinal lining repair, while vitamin D modulates immune function and protects against infections. Maintaining optimal levels of both supports gut recovery and overall immunity.

Benefits of restoring gut microbiota

• Stronger immunity: A balanced microbiota helps protect against infections.

• Better digestion: Reduces bloating, diarrhea, and constipation.

• Improved mood: Gut health influences the gut–brain axis and overall well-being.

• Less inflammation: Reduces chronic inflammation and disease risk.

Summary

Antibiotics are essential for fighting infections, but they can disrupt gut balance. Restoring the microbiota afterward is crucial for overall health. Regular probiotic use — especially Lactobacillus acidophilus Narine — along with prebiotics, a balanced diet, and proper supplementation helps rebuild gut health, strengthen immunity, and improve well-being.

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Probiotics – the guardians of our health

Probiotics are live microorganisms that, when consumed in adequate amounts, provide health benefits. They are essential for maintaining microbial balance in the digestive tract, supporting immunity, improving digestion, and contributing to overall well-being.

Most commonly used probiotic strains

• Lactobacillus acidophilus – one of the most well-known probiotic strains, recognized for its positive effect on digestive health and immune support. Especially valuable in fighting urinary tract infections, restoring gut balance after antibiotic treatment, and improving digestion.
• Bifidobacterium lactis – crucial for intestinal health, it helps alleviate symptoms of lactose intolerance and supports the immune system. Commonly found in fermented dairy products and dietary supplements.
• Lactobacillus rhamnosus GG – a strain with clinically proven benefits for gut and immune health. It shows strong antibacterial properties and helps prevent and treat diarrhea, particularly in children.
• Lactobacillus casei – a versatile strain that supports the digestive system and protects against pathogens. It also helps reduce symptoms of irritable bowel syndrome.

Discover Narex probiotics with the Lactobacillus acidophilus n.v. Er 317/402 Narine strain.

Why strain selection matters

Choosing the right probiotic strain is crucial because not all probiotics work the same way. Each strain has a unique mode of action and can affect different parts of the body. Some strains are especially effective for gut health, while others have strong anti-inflammatory or antibacterial properties, making them better suited for specific health concerns.

Before choosing a probiotic supplement, it’s important to identify your goal: Do you want to support digestion, strengthen immunity, improve mental well-being, or reduce allergy symptoms? The answer determines which strain will offer the greatest benefits.

Another key factor is the origin of the strain. Probiotics derived from the human microbiome tend to be more effective, as they are already adapted to the conditions of the human digestive tract and can colonize the intestines more efficiently.

It’s also worth checking for scientific research and clinical evidence supporting the effectiveness of a given strain. Some probiotic strains have been extensively studied and proven to deliver measurable health benefits. Choosing products with such strains increases the likelihood of achieving real results.

Equally important is the viability and stability of the strain within the supplement. Probiotics must survive manufacturing, storage, and passage through the stomach to reach the intestines in sufficient quantity. Modern production technologies and product formulations play a major role in ensuring their survival.

In summary, selecting the right probiotic strain is essential to maximizing the health benefits of supplementation. By paying attention to your body’s needs, the strain’s origin, scientific support, and product quality, you can significantly increase your chances of achieving the desired health outcomes.

How to introduce probiotics into your diet

You can provide your body with probiotics through a diet rich in fermented foods—such as yogurt, kefir, and sauerkraut—or through supplements. Remember that regular use is key to enjoying their full benefits.

To conclude, probiotics are a powerful tool for supporting overall health. Regularly including them in your diet can bring long-term positive effects for your body.

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