Overview
Bio-Kult is a UK-based supplement brand that develops multi-strain probiotics and wellness formulations. According to the manufacturer, its products are formulated with input from doctors, nutritionists, and microbiologists.
The brand has been in the market for decades and offers products targeting gut health as well as immune, women’s, and cognitive health.
However, the actual benefits that each specific Bio-Kult supplement claims to offer may vary with individual users.

Bio Kult Review – Health Insiders Images
What Is Bio Kult?
Bio-Kult is essentially a line of probiotic supplements, crafted with an advanced multi-strain formula that contains live bacteria to complement existing gut flora.
The product range includes formulations for digestion, women’s intimate health, gut-brain axis, and immune support.
Important to note, however, is that these formulas are not intended to diagnose or treat medical conditions but are marketed as supportive wellness products.
Also, while it makes bold claims that they use clinical research to design their products, probiotic responses are known to differ widely between individuals, and results may not be guaranteed.
How Does It Work? | The Science Behind the Brand
The approach Bio-Kult uses is rooted in the idea that the composition of bacteria in the gut affects digestion and immune function significantly. The supplements work to deliver live bacterial strains to the gut, helping balance gut flora.
Evidence supporting the efficacy is a randomized placebo-controlled clinical trial in the BMC Gastroenterology journal by Shamsuddin M. Ishaque et. al, involving 400 adult patients with diarrhea-predominant irritable bowel syndrome.[1]
The participants receiving Bio-Kult (14 bacterial strains) experienced significant improvements: their abdominal pain reduced, the number of daily bowel motions decreased, and the quality-of-life measures substantially improved.
While this study suggests potential benefits in a specific population, it does not establish universal effectiveness across all users or conditions.
The probiotics in its formulations maintain the balance of intestinal microbes. A review article by Xinzhou Wang et. Al, in the journal of Molecules, explains how probiotics regulate gut microbiota to improve the immunity of the host.[2]
Beyond gut flora balance, these probiotics also fight harmful microbes by producing bacteriocins to lower gut pH and discourage pathogens, thereby modulating the immune responses in the gut.
Top Recommended Bio Kult Products
Bio-Kult Everyday
Bio-Kult Everyday is a classic multi-strain daily probiotic developed for digestive health support. It contains 14 live bacterial strains to complement the existing gut flora.
Ingredients: 14 live bacterial strains (milk, soya), Bulking agent (microcrystalline cellulose), vegetable capsule (hydroxypropyl methylcellulose).
Price: $13.12 (30 capsules); $25.02 (60 capsules); $47.56 (120 capsules)
Benefits: Claims to support daily digestive balance, aid digestion, maintain gut flora, and support immune health.
Bio-Kult Boosted Extra Strength
Bio-Kult Boosted is designed to target the immune system, as well as the gut. It has an advanced multi-strain formulation containing Vitamin B12 that contributes to the normal functioning of the immune system.
Ingredients: Vitamin B12, Bulking agent (microcrystalline cellulose), Live bacterial cultures strains (milk, soya), Vegetable capsule (hydroxypropyl methylcellulose).
Price: $34.88 (30 capsules)
Benefits: May help support the immune system and digestive tract health.
Bio-Kult Women’s Intimate Flora
Bio-Kult Intimate Flora for women’s health is a daily vaginal microbiome and gut health supplement. It’s designed to support the digestive system, immune system, and hormonal balance, and complement the vaginal microbiome.
Ingredients: Trimagnesium dicitrate, Live bacterial strains (milk, soya), Vegetable capsule (hydroxypropyl methylcellulose), Bulking agent (microcrystalline cellulose), Vitamin E, Vitamin D3, Vitamin B6.
Price: $25.04
Benefits: Claims to support your immune system, hormonal balance, and gut flora, complements vaginal microbiome.
Bio-Kult 3-in-1 Biotic Blend Gummies for Kids, Strawberry Flavor
These are multivitamin gummies for kids aged 4 years +. Each gummy is carefully crafted with a unique pre + pro + post formula that nurtures your child’s gut health, 2 billion live bacteria to complement the existing gut flora, and vitamins to maintain the little one’s immune system.
Ingredients: Live bacterial strains, Vitamin C, Vitamin D3, Vitamin E, Bulking agents (maltitol, sorbitol), Resistant maltodextrin, Fructooligosaccharides, Gelling agent, Strawberry flavor, Acidity regulator (Sodium citrate), Emulsifier, Sweetener.
Price: $9.74 (30 gummies)
Benefits: It may help nurture children’s gut health, complement existing gut flora, and support their immune system.
Bio-Kult Ingredients
These are the primary active ingredients across all supplements:
Probiotic Bacterial Strains: Probiotic strains are well known for their ability to maintain digestive health. They are beneficial bacteria that support the digestive system, maintain gut flora, boost immunity, and enhance overall well-being.
A review article by Bhutada Sarita in the Frontiers in Microbiology journal discusses how probiotics are essential in maintaining gastrointestinal tract health.[3] It also adds that probiotics enhance the immune system by increasing the generation of immunological cells and antibodies.
Bulking agent (microcrystalline cellulose): This is a refined wood pulp derivative incorporated in dietary supplements as a bulking agent. It supports proper absorption of vitamins and minerals into the body, contributes to satiety, and improves bowel regularity.
According to a study in the ACS Omega journal by Hanzhen Qiao et. Al, microcrystalline cellulose in dietary supplements has shown promise in restoring gut barrier integrity, modulating gut microbiota, and alleviating intestinal inflammation.[4]
Vegetable capsule (hydroxypropyl methylcellulose): This ingredient is incorporated in Bio-Kult supplements because of its ability to encapsulate other sensitive ingredients like probiotics. It also acts as a prebiotic fiber and contributes to digestive health by promoting bowel regularity and alleviating symptoms of gastrointestinal disorders.
A study in The FASEB Journal by researcher Laura M. Cox et. Al concluded that hydroxypropyl methylcellulose influences intestinal microbiota and improves metabolism. It may also aid in weight management.[5]
Additional Ingredients: Depending on the product’s purpose, for example, brain health, immune health, women’s health, or kids’ gut health, there are other ingredients added to the supplement to deliver claimed benefits.
In the supplement for brain health, Zinc citrate is added as it influences memory, cognitive function, and mood by modulating the activity of neurotransmitters in the brain. A review by Zhe Li et. Al, in the Biomolecules journal, stated that zinc plays a crucial role in both pathological and physiological brain functions.[6]
Vitamin B6 in the Women’s Intimate Flora supplement supports its claim to regulate hormonal imbalance. A review in Vitamins and Hormones by researcher D. P. Rose stated that Vitamin B6 regulates the anterior pituitary hormones.[7] It also supports the production of neurotransmitters like dopamine and serotonin, which help in mood regulation.
Bio-Kult Customer Reviews
- Bio-Kult Everyday
Love these
I’ve been using these for a while now, and I love them. I make sure to take them every day, and my digestive system seems much stronger for it. – Cathryn.
- Bio-Kult Boosted Extra Strength
Below my expectations, but it works!
I had sensitive stomach issues for years and was recommended Bio-Kult to improve the microbiome through a friend, and I think the results are somewhat good, though not exactly what I expected. – Nelly
- Bio-Kult Brain Health
I got my mojo back
When I started using these, I was still getting over a long cold and felt sluggish, tired, and just not quite the full ticket. However, after a week or so, I noticed a difference in feeling like my old self and more energized in the morning – I’ll continue to take them going forward. – Emmawoody1
- Bio-Kult Women’s Intimate Flora
Bio-Kult intimate flora with multivitamins
These are great. They helped my gut, my hormonal balance, and it has multivitamins and helps with the immune system. They are easy to take, once a day with food or sprinkle into a drink or on food. – Jodiemetcalfe_8827.
Is Bio-Kult Safe? – Warnings & Complaints
Bio-Kult products are generally considered safe for healthy adults when used as directed. However, there are some cautions. The high concentrations of live bacteria may cause some individuals to experience digestive discomfort like bloating, gas, and loose stools when starting supplementation.
Additionally, the probiotics involve milk and soya in the fermentation, which means that people with strict soy or dairy allergies should proceed with caution. Although the manufacturer states the products are suitable for those with lactose intolerance, this may not apply to everyone.
Consultation with a healthcare professional is recommended before use, especially for individuals who are pregnant, nursing, have a compromised immune system, or are managing chronic health conditions.
Deals, Prices & Where to Buy Bio-Kult?
Bio-Kult products are sold through the brand’s official website, various UK-based health stores, and major online retailers like Amazon. It’s best to purchase directly from the manufacturer as it guarantees you product authenticity, bundle deals, and subscription offers.
These are the prices of some of the most popular products:
- Bio-Kult Everyday (30 capsules) – $14.64
- 90-day bundle (3 packs) – $46.02
- Bio-Kult Boosted (30 capsules) – $34.88
- 90-day bundle (3 packs) – $104.63
- Bio-Kult Brighten (60 capsules) – $29.29
- 90-day bundle (3 packs) – $87.92
The manufacturers offer a 14-day return policy for wrong items received and damaged or faulty items. There’s however, no satisfaction guarantee.
Final Verdict
Bio-Kult presents itself as a probiotic brand that offers a range of multi-strain supplements targeting different health areas.
Well, its products are supported by some clinical research, particularly in digestive health, though evidence does not guarantee consistent results for everyone.
Individual responses about different products are highly variable, with some users reporting noticeable improvements, while others experience minimal effects or mild side effects. Furthermore, the presence of milk and soya used in fermentation may be problematic for people with certain allergies.
Overall, it may be a solid option for anyone looking for a scientifically grounded probiotic brand. But you are advised to approach with caution and realistic expectations, and ideally under medical guidance, especially if you have underlying health conditions.
Frequently Asked Questions
Q: Is Bio-Kult suitable for vegans and vegetarians?
A: The Bio-Kult capsules are labelled as vegetarian, but because milk and soya are used in fermentation, some variants may not be strictly vegan.
Q: Are there interactions between Bio-Kult products and other medications?
A: Currently, there are no known contraindications between live bacteria and any pharmaceutical medications. However, there may be interactions with other ingredients like botanicals, vitamins, and minerals. Please consult your doctor before taking these supplements if you are taking any medications.
Q: Can I safely take more than one Bio-Kult product?
A: Most of the Bio-Kult products can be safely taken together. However, if the products contain the same minerals/vitamins, it is recommended that you check the combined amounts so that you do not exceed safe tolerable limits.
Q: How long will it take to see results?
A: Most people report improvements within a few weeks of consistent use. The Bio-Kult clinical trials in the management of irritable bowel syndrome used a 16-week timeframe.
Q: Do I need to refrigerate Bio-Kult?
A: No, Bio-Kult products do not need refrigeration. They use a freeze-dry technology that preserves the bacteria even when stored at room temperature.
7 Sources
Health Insiders relies on peer-reviewed studies, academic research institutions, and medical associations. We avoid using tertiary references. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
[1] A randomized placebo-controlled clinical trial of a multi-strain probiotic formulation (Bio-Kult®) in the management of diarrhea-predominant irritable bowel syndrome: https://pubmed.ncbi.nlm.nih.gov/29801486/
[2] Probiotics Regulate Gut Microbiota: An Effective Method to Improve Immunity: https://pmc.ncbi.nlm.nih.gov/articles/PMC8512487/
[3] A comprehensive review of probiotics and human health-current prospective and applications: https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2024.1487641/full
[4] Structural Characteristics of Inulin and Microcrystalline Cellulose and Their Effect on Ameliorating Colitis and Altering Colonic Microbiota in Dextran Sodium Sulfate-Induced Colitic Mice: https://pmc.ncbi.nlm.nih.gov/articles/PMC8991927/
[5] The nonfermentable dietary fiber hydroxypropyl methylcellulose modulates intestinal microbiota: https://pmc.ncbi.nlm.nih.gov/articles/PMC3545536/
[6] The Important Role of Zinc in Neurological Diseases: https://www.mdpi.com/2218-273X/13/1/28
[7] The interactions between vitamin B6 and hormones: https://pubmed.ncbi.nlm.nih.gov/217175/

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Subtle Digestive Changes, Not Impressive
I took Bio-Kult daily, hoping for noticeable digestion and bloating relief, but the changes were very mild. Some days felt slightly better, yet overall improvement was inconsistent and underwhelming given its cost.