Klaire Labs Probiotic Reviews, Ingredients, Does It Work?

Edited and medically reviewed by ✔️ Team of BestInSupplements | Written by Katelyn Johnson (B.S. and M.S. in Nutrition Science)

You are here to read more about a rising star in probiotic supplements: Klaire Labs Probiotic. Our review goes over all the details of this product, including its safety, ingredients, health benefits, and more.

Review of Klaire Labs Probiotic

The gut and gastrointestinal (GI) system absorb nutrients that support key body functions that are involved in hormone and energy production, skin health, proper digestion, and much more. A healthy gut is important to overall health and supplying a source of beneficial bacteria to your gut with a supplement like Klarie Labs Probiotic can support a healthy gut and help you to achieve whole-body wellness.

There are trillions of bacteria in your digestive tract, and they all perform an important part in your body 1. This is important to know before we get in-depth about the reviews of Klaire Labs Probiotic.

Probiotics, often referred to as "good" bacteria, are meant to preserve and regulate digestive health, support effective immunological function, and aid with the regeneration of good bacteria concentrations in the gut after antibiotic usage or other disruptions 2.

The use of probiotic supplements has been demonstrated to help in the treatment and prevention of gastrointestinal disorders such as diarrhea, IBS (irritable bowel syndrome), Ulcerative Colitis, and Crohn's disease 3.

By taking a probiotic, such as Ther-Biotic Probiotic Complete by Klaire Labs, you are filling your gut with beneficial bacteria that steal nutrients from harmful bacteria, eventually starving them out of your GI tract.

Beneficial bacteria support immune defense systems and improve the function of the immunological gut barrier. They lower the production of cytokines, which are pro-inflammatory protein peptides. Their presence in the body can trigger the body’s immune response, which can lead to cytokine overproduction. This can cause adverse health effects such as depression, pancreatitis (inflammation of the pancreas), even cancer 3.

Who Is Klaire Labs?

Klaire Labs is a vitamin and supplement company that offers a diverse range of supplements. Their probiotics are easily identified by their deep blue glass bottles.

Klaire Labs is one of the world's largest probiotics manufacturers, with a track record of delivering high-quality ingredients in their supplements that are well-researched.

Klaire Labs launched a variety of Ther-Biotic products, which are high-potency probiotics. Their supplements are made with the unique InTactic technology, which shields probiotic organisms from harsh stomach acid when taken 4.

Learn more about Klaire Labs: Best Klaire Labs Supplements You Should Know

We've chosen a handful of Klaire Labs' most popular probiotic supplements to give you a better idea of why you should try this brand's probiotic product line. But, before getting in-depth with the list, firstly let's discover more about the probiotics of this brand.

Klaire Labs Probiotics Benefits

All probiotic functions include antimicrobial action, support for intestinal barrier integrity, immunology, and healthy inflammatory response. They also produce compounds (lactic acid and hydrogen peroxide) that reduce pathogenic bacteria, viruses, and yeast 5. Apart from this, they can also be helpful in the following:

  • Aid in the support of the immune system 6.
  • Block pathogens from binding to the gut mucosa 5.
  • Strengthens intestinal barrier (to aid in the treatment or prevention of a "leaky" gut) 5.
  • Produces short-chain fatty acids including acetate, butyrate, and propionate 7.
  • Prevents the generation of pro-inflammatory cytokines 6.
  • Produces enzymes that aid in the digestion of lactose 7.
  • Helps with phenol and ammonia detoxification and removal 7.

Klaire Labs Probiotic Formula Ingredients

Probiotic Blend is formulated in a chicory root sourced inulin base and equals 280 mg with the following beneficial bacteria (CFU stands for colony-forming unit and simply refers to the concentration of each bacterial strain received following ingestion):

  • Lactobacillus rhamnosus 6.0 billion CFU.
  • Bifidobacterium bifidum 5.0 billion CFU.
  • Lactobacillus acidophilus 3.0 billion CFU.
  • Lactobacillus casei 2.5 billion CFU.
  • Lactobacillus plantarum 2.0 billion CFU.
  • Lactobacillus salivarius 2.0 billion CFU.
  • Bifidobacterium longum 1.0 billion CFU.
  • Streptococcus thermophilus 1.0 billion CFU.
  • Lactobacillus bulgaricus 1.0 billion CFU.
  • Lactobacillus paracasei 0.5 billion CFU.
  • Bifidobacterium lactis 0.5 billion CFU.
  • Bifidobacterium breve 0.5 billion CFU.

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Klaire Labs Probiotics By Categories

In total, there are 11 distinct Ther-Biotic formulas from Klaire Labs available, with items created specifically for newborns, children, women, and various health concerns. Let's take a look at some of the most relevant ones.

Klaire Labs' Infant Formula Probiotic

Klaire Labs' Ther-Biotic Infant Formula is a multi-species probiotic formula made exclusively for infants. An infant's gut flora can be altered by cesarean section birth antibiotics or a poor maternal diet deficient in fresh vegetables and fruit 8.

Klaire Labs Infant Formula

Because newborns' gastrointestinal systems are not fully complete, they are unable to metabolize lactic acid produced by species of lactobacilli. Klaire Labs Ther-Biotic Infant formula is gentle on an infant's digestive and immune systems.

Ther-Biotic Infant Formula is a high-potency mixture of 5 Bifidobacterium species and 5 Lactobacillus species designed specially to satisfy the needs of infants and newborns up to the age of two.

Each Lactobacillus species in this infant formula produces L(+)-lactic acid, a type of lactic acid that has been demonstrated to be safe for newborns to metabolize.

Ther-Biotic Infant Formula powder provides 10+ billion CFUs per 14 teaspoons and may be used with breastmilk, infant formula, or solid meals (when appropriate). Keep in mind, when shopping for an infant probiotic formula, you will want a hypoallergenic supplement.

Klaire Labs Children’s Chewable Probiotic

Ther-Biotic Children's Chewable Probiotic is a diverse hypoallergenic probiotic supplement for children aged 2 and up. Ther-Biotic Children's chewable tablets are sweetened with xylitol, a sugar alcohol that has a pleasant flavor that kids will enjoy. Unlike conventional sugars, xylitol discourages the growth of dental plaque and tooth decay.

Klaire Labs Children Chewable

These compact naturally flavored chewable tablets provide high CFU levels of four beneficial Lactobacillus and four Bifidobacterium species that have been extensively researched and clinically demonstrated to improve gastrointestinal health and immunological function, as well as support children's dental health 8.

Klaire Labs Chewable Probiotic

Klaire Labs Vital-Zymes Chewable 180 tablets with Serratia peptidase are convenient and meant to be taken before each meal. In addition to its crucial role in breaking down protein and lipids into simple and complex sugar and fiber carbohydrates that are easier to digest, Serratia peptidase protects your GI tissues from inflammation 9.

Klaire Labs Vital-Zymes Chewable 180 tablets

Regardless of age, some individuals with “leaky gut” syndrome and other digestive disorders have noticed improvements in their health and more comfort in their daily lives.

Klaire Labs Probiotic Complete

Ther-Biotic Complete is a very effective probiotic supplement that provides 25 billion CFU, utilizing an optimal formula of 12 well-studied hypoallergenic probiotic species shown to promote optimal gut flora, immunological, and gastrointestinal health.

Klaire Labs Probiotic Complete

Klaire Labs Ther-Biotic Complete has been professionally developed with a blend of colonizing and temporary strains that each serve a specific purpose in supporting healthy microfloral balance across the whole gastrointestinal system; when combined, they provide synergistic probiotic nutritional aid for both the small and large intestines 10.

To increase probiotic survival, Ther-Biotic does not require additive-packed spheres of pills – packaged in a base of chicory-derived prebiotic inulin. InTactic technology aids in the delivery of live probiotics to the small intestine and colon.

When exposed to stomach acid, the InTactic 'shield' creates a gel-like matrix around the probiotics, shielding them from degradation until they reach the duodenum, where they are released for maximum efficiency.

Klaire Labs Probiotic Complete Powder

Klaire Labs Probiotic Powder offers a mixture of 12 active, safe, and well-studied microflora species that promote optimal intestinal flora, immunological, and GI health 10. Each probiotic species in Ther-Biotic Complete powder provides 100 billion CFU hypoallergenic in a base of chicory-derived prebiotic inulin.

Klaire Labs Probiotic Complete Powder

Their probiotic powder supplements are made with strains that fight against pathogenic flora to support intestinal barrier integrity and promote a healthy inflammatory response. Ther-Biotic Complete Powder promotes detoxifying enzyme activity while eliminating ammonia and phenol.

Is Klaire Labs Probiotics Safe To Use?

Klaire Lab Probiotics are high-quality and contain safe, well-researched strains of probiotic bacteria. They use microorganisms that are found naturally in the gut and have a really low chance of causing harm.

Ther-Biotic probiotic species are produced on a plant-based substrate with no artificial colors, flavors, or preservatives. Klaire Lab probiotics are made in hypoallergenic labs and are allergy-friendly - free of milk/casein, eggs, fish, shellfish, tree nuts, peanuts, wheat, gluten, and soybeans. The supplements are suitable for vegans and vegetarians.

Klaire Labs Probiotics Potential Side Effects

Some people may experience moderate and short-lived side effects during the first few days of taking this supplement, including gas, bloating, constipation, diarrhea, or abdominal pain or discomfort. These effects will go away within a few days of use.

Probiotics by Klaire Labs are designed specifically for people who suffer from persistent digestive issues. Because extremely rare occurrences of bacterial or fungal illness have been documented, those with weak immune systems should speak with their doctor before taking probiotics 11.

When introducing a new probiotic, it is always better to start slowly and gradually (or any supplement, for that matter). And, of course, in case of any doubt, contact your healthcare professional.

Klaire Labs Probiotics Reviews And Final Thoughts

Klaire Labs offer pure and effective probiotics, which is why they are the preferred choice for non-GMO ingredients in probiotics. Klaire Labs is an excellent supplement company with an abundance of positive feedback and reviews. They have a 4.5 average rating and 164 reviews.

Klaire Labs collaborates with board-certified doctors and manufactures doctor-recommended, pharmaceutical-grade supplements with an emphasis on purity, potency, and performance. They are a respectable company that has been recognized for providing some of the greatest supplements available today by health professionals all around the world.

Their supplements are third-party GMP certified and feature research-backed ingredients – all of which have led to them setting quality standards within the supplement market.

Where To Buy Klaire Labs Probiotics

Klaire Labs Probiotic supplements are available through licensed health practitioners. Health food stores require a licensed health professional to sell Klaire Labs products.

If you want to purchase supplements in person or order online through the Klaire Labs website, your primary care doctor can provide an authorization number to create an account to start the process. There is also a Klaire Labs Practitioner Locator on their website that can help you identify an approved Klaire Labs merchant near you.

Additionally, Klaire Labs supplements are available online through Amazon for folks who do not live near qualifying stores. Available through Amazon starting at around $44 (60 capsules).

Klaire Labs
Klaire Labs has a huge number of supplements related to different categories: cognition, improvement of the immunity, probiotics, prebiotics, mood and mental well-being...

Frequently Asked Questions

Klaire Labs Probiotic supplement delivers premium-grade probiotic microorganisms, formulated to support the health and integrity of the mucosal wall that lines the gastrointestinal tract. This supplement regulates bowel motility, maximizes absorption, optimizes blood flow, and aids in the synthesis and metabolism of vital nutrients, including vitamin K and B vitamins.
Klaire Labs probiotic supplement is a combination of many strains of beneficial microorganism species that have been scientifically-validated to deliver health benefits. The live probiotics are preserved in a chicory inulin root powder base, which also serves as a preservative to ensure freshness upon delivery.
Probiotic supplements are viewed as generally safe to consume by most health individuals when taken as directed according to the recommended serving size indicated on the supplements label. Side effects may occur, the most common being nausea, digestive upset, bloating, cramps, and headaches.
Klaire Labs Probiotics supplement is manufactured by Klaire Labs, which is a reputable health supplement company that has a solid track record of producing professional-grade nutraceuticals. Their nutritional supplements and health products undergo third-party testing for purity and quality, and are manufactured in FDA-approved and GMP-certified facilities.
The entire line of Klaire Labs nutraceuticals and health supplements is available to purchase through a licensed health professional or with a permission number given by a provider. Depending on the serving size, you can expect to pay anywhere from $28.99 (lower end) to $89.99 (higher end).
Klaire Labs nutritional product line, including their probiotic supplement, is not available to purchase at regular health and nutrition stores. Their products are only available for purchase through licensed healthcare practitioners. Interested buyers can obtain a doctor-provided permission number to create an account and order from their website.


  1. Sanders, M.E. Probiotics: Definition, sources, selection, and uses. Clinc Infect Dis. 2017 Feb 1;46 Suppl 2:S58-61.
  2. McFarland, L.V. Systematic review and meta-analysis of Saccharomyces boulardii in adult patients. World J Gastroenterol. 2010 May 14;16(18):2202-2222.
  3. Gibson, G.R., et al. Expert consensus document: The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on the definition and scope of prebiotics. Nature Reviews Gastroenterology & Hepatology. 2017 Jun 14;14:491–502.
  4. Sarao, L. K., & Arora, M. (2017). Probiotics, prebiotics, and microencapsulation: A review. Critical reviews in food science and nutrition, 57(2), 344-371.
  5. Bron, P. A., Kleerebezem, M., Brummer, R. J., Cani, P. D., Mercenier, A., MacDonald, T. T., ... & Wells, J. M. (2017). Can probiotics modulate human disease by impacting intestinal barrier function?. British Journal of Nutrition, 117(1), 93-107.
  6. Rhayat, L., Maresca, M., Nicoletti, C., Perrier, J., Brinch, K. S., Christian, S., ... & Eckhardt, E. (2019). Effect of Bacillus subtilis strains on intestinal barrier function and inflammatory response. Frontiers in immunology, 10, 564.
  7. Gill, H. S., & Guarner, F. (2004). Probiotics and human health: a clinical perspective. Postgraduate Medical Journal, 80(947), 516-526.
  8. Kapourchali, F. R., & Cresci, G. A. (2020). Early‐Life Gut Microbiome—The Importance of Maternal and Infant Factors in Its Establishment. Nutrition in Clinical Practice, 35(3), 386-405.
  9. Read, M. F., Leaders, V. S., VIP, U. T., & Lifestyle, D. F. Serrapeptase-A Natural Anti-Inflammatory.
  10. Sharifi-Rad, J., Rodrigues, C. F., Stojanović-Radić, Z., Dimitrijević, M., Aleksić, A., Neffe-Skocińska, K., ... & Calina, D. (2020). Probiotics: Versatile bioactive components in promoting human health. Medicina, 56(9), 433.
  11. Salehi, B., Dimitrijević, M., Aleksić, A., Neffe-Skocińska, K., Zielińska, D., Kołożyn-Krajewska, D., ... & Martins, N. (2021). Human microbiome and homeostasis: insights into the key role of prebiotics, probiotics, and symbiotics. Critical reviews in food science and nutrition, 61(9), 1415-1428.

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