Tributyrin (5-in-1) UK Guide: The Triglyceride Butyrate, Explained
Tributyrin is one of the more talked-about ways to take butyrate, because of how it delivers it. Instead of a butyrate salt, tributyrin binds butyrate into a triglyceride — a form designed to survive the stomach and release lower down. This 5-in-1 formula adds L-glutamine, a prebiotic fibre, live cultures and zinc. Below: what each part is, and which claims the UK actually permits. New to butyrate generally? Start with our butyrate guide.
What tributyrin is
Tributyrin is a triglyceride: a glycerol backbone carrying three butyrate molecules. Because it's a fat rather than a salt, it's less affected by stomach acid, and enzymes release the butyrate further along the digestive tract. In this product, 850 mg of 95%-pure tributyrin yields roughly 731 mg of butyrate per serving. As with all butyrate, it's worth stating plainly: butyrate has no authorised health claim in Great Britain, so the science stays background rather than a promise.
What's in this 5-in-1 formula
| Per serving (2 capsules) | Amount | %NRV |
| Tributyrin (95% pure) | 850 mg | † |
| — yielding butyrate | ~731 mg | † |
| L-glutamine | 400 mg | † |
| FOS (prebiotic fibre) | 100 mg | † |
| Live cultures (B. coagulans, L. rhamnosus) | 5 billion CFU | † |
| Zinc (zinc L-carnosine) | 9 mg | 90% |
† No Nutrient Reference Value established; no authorised UK health claim.
L-glutamine is an amino acid found in the diet and made by the body; FOS is a prebiotic fibre; the live cultures are bacterial strains (often called probiotics). They're listed so you can see the full formula — but none carries an authorised UK health claim, so no benefit is attached to them here.
What we can legitimately say
The single authorised hook in this formula is its zinc, supplied at a high share of the NRV:
- Zinc (90% NRV) contributes to the normal function of the immune system, the protection of cells from oxidative stress, and normal cognitive function.
Where the "gut" story sits. Tributyrin, glutamine, prebiotic fibre and live cultures are the reason people buy a formula like this — but none of them has an authorised digestive or gut-health claim in Great Britain. The only benefit statements we can stand behind trace back to the zinc. Everything else is background you can read about and judge for yourself.
Triglyceride form vs butyrate salts
The main alternative delivers butyrate as salts (sodium and calcium butyrate), often microencapsulated. Tributyrin's selling point is the triglyceride chemistry and where it releases; the salt form's is a straightforward, well-established delivery. Neither is "better" as a claim — they're different approaches. See our sodium butyrate guide for that side of the comparison.
How to take it
The serving is two capsules, from a 120-capsule tub. Take with water, with or without food. Follow the label and don't exceed the stated dose. If you are pregnant, breastfeeding, taking medication, or have a compromised immune system, check with your doctor or pharmacist before taking a product with live cultures. Supplements don't replace a varied, balanced diet.
Quality & transparency
The tributyrin purity (95%) and the resulting butyrate yield are stated openly, along with every other ingredient and its amount — no hidden blends. You can check the zinc % NRV for yourself, and batch documentation is available on request.
References & further reading
- Great Britain Nutrition and Health Claims (NHC) Register — authorised claims for zinc: gov.uk/…/great-britain-nutrition-and-health-claims-nhc-register
- NHS — Vitamins and minerals (zinc): nhs.uk/conditions/vitamins-and-minerals/others
- Research overview via PubMed (tributyrin): pubmed.ncbi.nlm.nih.gov/?term=tributyrin
This article is for general information and is not medical advice. Food supplements should not replace a varied, balanced diet or a healthy lifestyle. If you are pregnant, breastfeeding, taking medication or under medical care, speak to a qualified health professional before use. Do not exceed the stated dose.
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