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What Is Lactinex™?

K.C. Bruning
Updated Mar 03, 2024
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Lactinex™ is a non-prescription probiotic dietary supplement. Coming as grains or tablets, it is most commonly used to treat diarrhea and conditions of the colon such as irritable bowel syndrome. The supplement works by increasing the number of gut flora, or microorganisms, in the gastrointestinal tract. These bacteria are necessary for healthy elimination and are normally naturally present in the system. It is often recommended by doctors after the use of antibiotics has killed an excessive number of these microorganisms.

The primary active ingredient of Lactinex™ is bacteria from the Lactobacillus genus. It also contains whey powder, milk, and soy peptone. The good bacteria in this supplement help keep the body healthy by killing harmful bacteria and assisting in the process of breaking down food so that waste can travel through the gastrointestinal system. In addition to the intestines, these bacteria are also naturally present in the vagina.

The method of taking the supplement depends upon the form. Granules are usually sprinkled on food, whereas tablets are chewed then followed with a small amount of fluid and, ideally, a meal as well. Many doctors suggest it be taken three to four times daily. As it contains living organisms, the supplement should be refrigerated.

Though a prescription is not required to take Lactinex™, patients should inform their doctor of all medications and supplements being taken before using the drug. Individuals who are taking antibiotics will typically require additional observation by a doctor and potentially need to take an adjusted dosage, as the helpful bacteria in Lactinex™ usually cannot survive the effects of the drug. Experiences with recurring vaginal infections, stomach ailments, and excessive diarrhea should also be discussed with a doctor, as they increase the risk of taking the supplement.

There are other conditions which make taking Lactinex™ too risky. Women who are nursing or pregnant are typically advised not to take the drug. It is also problematic for patients who are allergic to soy, lactose, or milk products.

Aside from a possible temporary increase in stomach gas, there are not any commonly reported side effects of taking the supplement. It is possible to have an allergic reaction to the drug, in which case emergency medical attention should be sought. People who already have other allergies or suffer from asthma are at a higher risk of adverse side effects. An allergic reaction may include breathing problems, swelling in the areas from the neck up, and a tight chest. Itching, rash, or hives may also develop.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
K.C. Bruning
By K.C. Bruning
Kendahl Cruver Bruning, a versatile writer and editor, creates engaging content for a wide range of publications and platforms, including The Health Board. With a degree in English, she crafts compelling blog posts, web copy, resumes, and articles that resonate with readers. Bruning also showcases her passion for writing and learning through her own review site and podcast, offering unique perspectives on various topics.
Discussion Comments
By turquoise — On Sep 25, 2012

@ZipLine-- I use the capsules. It works just fine, I don't think there is any difference between the granules and capsules in terms of effectiveness. You just need to keep them in the fridge.

By fBoyle — On Sep 25, 2012

@ZipLine-- Can you elaborate on the bowel problems you're having? Is it constipation or diarrhea?

If it's diarrhea, I do recommend Lactinex for you. I've been using Lactinex on and off for several years now and it's really effective for diarrhea. It is a treatment that's used in hospitals for people who have severe diarrhea, it puts the lost lactobaccilus back into the system and regulates bowels.

I have a friend with IBS who also uses this and I've even heard that some people give it to infants when they have diarrhea. But I think they give a much lower dose than what an adult would take.

By ZipLine — On Sep 24, 2012

I recently had to take antibiotics for a month for a bacterial infection and consequently, I'm having some side effects like upset stomach and bowel irregularity. My doctor recommended that I take some probiotics to replace the good bacteria the course of antibiotics killed. So I've been looking into it and there are just so many different probiotic products out there. I'm really confused about which is the best.

Has anyone here taken lactinex? How was your experience? Would you recommend it for me?

Also, in which form is lactinex better and easier to take-- granules or capsules?

K.C. Bruning
K.C. Bruning
Kendahl Cruver Bruning, a versatile writer and editor, creates engaging content for a wide range of publications and...
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