Sodium Butyrate (7-in-1) UK Guide: What’s Inside & What It Can Claim
Butyrate supplements have taken off in the UK, and they come in more than one form. This one is a butyrate-salt formula: microencapsulated sodium and calcium butyrate, paired with a prebiotic fibre, live bacterial cultures, and two nutrients — zinc and vitamin D. Here's what each part actually is, and — crucially — which benefits the UK rules allow us to state and which we have to leave as background. For the general butyrate primer, see our butyrate guide.
What butyrate is (in one paragraph)
Butyrate is a short-chain fatty acid. Your gut bacteria produce it naturally when they ferment dietary fibre, and it's also found in small amounts in foods like butter. A butyrate supplement simply provides it directly in capsule form. That's the factual picture — and it's worth being upfront that, in Great Britain, butyrate itself carries no authorised health claim, so what you may read about it online stays in the "interesting research" column rather than anything a product can promise.
What's in this 7-in-1 formula
| Per serving (2 capsules) | Amount | %NRV |
| Sodium butyrate (microencapsulated) | 600 mg | † |
| Calcium butyrate | 200 mg | † |
| Inulin-FOS (prebiotic fibre) | 500 mg | † |
| Lactobacillus rhamnosus GG | 5 billion CFU | † |
| Bifidobacterium lactis BB-12 | 5 billion CFU | † |
| Zinc (zinc citrate) | 7.5 mg | 75% |
| Vitamin D3 | 4 µg | 80% |
† No Nutrient Reference Value established; no authorised UK health claim.
Inulin-FOS is a prebiotic fibre — a food source for gut bacteria. The two named strains are live bacterial cultures (often called probiotics). All three are described here so you know what's in the capsule; none of them carries an authorised UK health claim, so we're not attaching a benefit to them.
What we can legitimately say
The authorised claims in this product come from its two nutrients, both supplied at a meaningful share of the NRV:
- Zinc (75% NRV) contributes to the normal function of the immune system, the protection of cells from oxidative stress, and normal cognitive function.
- Vitamin D (80% NRV) contributes to the normal function of the immune system and the maintenance of normal bones and muscle function.
Read gut supplements carefully. A butyrate-plus-prebiotic-plus-cultures formula naturally invites "gut health" language — but in Great Britain there are no authorised digestive or gut-health claims for butyrate, prebiotic fibre or live cultures. Any legitimate benefit statement on a product like this traces back to the vitamins and minerals (here, zinc and vitamin D), not the butyrate blend.
Salt form vs triglyceride form
This product delivers butyrate as salts (sodium and calcium butyrate), microencapsulated to help it travel further before release. A different approach uses tributyrin, where butyrate is bound into a triglyceride. If you're weighing up the two delivery styles, see our tributyrin guide for the comparison.
How to take it
The serving is two capsules a day, giving a 60-day supply from the 120-capsule tub. Take with water; some people prefer with food. Follow the label and don't exceed the stated dose. If you are pregnant, breastfeeding, taking medication (live cultures and supplements can matter if your immune system is compromised), or under medical care, check with your doctor or pharmacist first. Supplements don't replace a varied, balanced diet.
Quality & transparency
Every ingredient and amount is listed per serving with no hidden blends, so you can see exactly what you're taking — and check the zinc and vitamin D % NRV yourself. Batch documentation is available on request.
References & further reading
- Great Britain Nutrition and Health Claims (NHC) Register — authorised claims for zinc and vitamin D: gov.uk/…/great-britain-nutrition-and-health-claims-nhc-register
- NHS — Vitamins and minerals (zinc, vitamin D): nhs.uk/conditions/vitamins-and-minerals
- Research overview via PubMed (butyrate / sodium butyrate): pubmed.ncbi.nlm.nih.gov/?term=sodium+butyrate
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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