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Say what you want help with. The finder shows what the GB register lets any seller claim for it, what the register assessed and refused, and the cheapest capsules per capsule for each ingredient. It quotes; it never advises.

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Where the register allows less than sellers suggest

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Thyroid and Focus and Testosterone and Fertility and Weight and Heart

1587 capsules across 81 ingredients

Thyroid. Only iodine and selenium hold authorised register wording about the thyroid, quoted exactly on their pages. Thyroid conditions are diagnosed and managed by a GP, and the British Thyroid Foundation is the specialist charity.

Focus. Some nutrients hold register claims relating to normal cognitive or psychological function, quoted exactly on their pages. The wording is precise and worth reading as written; anything beyond it is marketing, not authorised claim.

Testosterone. Only a small number of ingredients hold register claims mentioning testosterone, and this page quotes them exactly. Claims in this category are heavily marketed well beyond what the register authorises; the split below shows the line.

Fertility. Ingredients here hold register claims relating to fertility and reproduction, quoted exactly. UK guidance on folic acid before and during early pregnancy is the best-established nutritional advice in this area, and Fertility Network UK below offers wider support.

Weight. The register takes a strict line on weight claims, and very little is authorised. This page shows the real status of ingredients people discuss for weight, quoted exactly. The NHS Better Health programme below is the evidence-based starting point.

Heart. This page collects ingredients whose register claims relate to the heart, blood pressure or cholesterol, quoted exactly. Diet, movement and prescribed medication come first in this area, and the British Heart Foundation below is the specialist charity for reliable information.

Nothing here is medical advice. The wording is the GB register's, quoted exactly; whether a product qualifies to use it is the seller's responsibility. Speak to a GP or pharmacist before taking a supplement, especially if you are pregnant, take medicines or have a diagnosed condition. Wording from the GB nutrition and health claims register; mapping reviewed 4 September 2026.

Holds an authorised claim

Vitamin C

1 authorised claim · 332 capsules · ingredient page
  • “Vitamin C contributes to normal collagen formation for the normal function of blood vessels” · Heart

All 332 vitamin c capsules

Zinc

3 authorised claims · 249 capsules · ingredient page
  • “Zinc contributes to normal fertility and reproduction” · Fertility
  • “Zinc contributes to normal cognitive function” · Focus
  • “Zinc contributes to the maintenance of normal testosterone levels in the blood” · Testosterone

Not authorised for thyroid or heart: the register refused 2 claims there.

All 249 zinc capsules

Vitamin B6

1 authorised claim · 185 capsules · ingredient page
  • “Vitamin B6 contributes to normal homocysteine metabolism” · Heart

All 185 vitamin b6 capsules

Vitamin B12

1 authorised claim · 163 capsules · ingredient page
  • “Vitamin B12 contributes to normal homocysteine metabolism” · Heart

All 163 vitamin b12 capsules

Folate

2 authorised claims · 138 capsules · ingredient page
  • “Folate contributes to maternal tissue growth during pregnancy” · Fertility
  • “Folate contributes to normal homocysteine metabolism” · Heart

All 138 folate capsules

Selenium

2 authorised claims · 95 capsules · ingredient page
  • “Selenium contributes to normal spermatogenesis” · Fertility
  • “Selenium contributes to the normal thyroid function” · Thyroid

Not authorised for heart or focus: the register refused 2 claims there.

All 95 selenium capsules

Iron

2 authorised claims · 87 capsules · ingredient page
  • “Iron contributes to normal cognitive function” · Focus
  • “Iron contributes to normal cognitive development of children” · Focus

Not authorised for heart: the register refused 1 claim there.

All 87 iron capsules

Choline

1 authorised claim · 49 capsules · ingredient page
  • “Choline contributes to normal homocysteine metabolism” · Heart

Not authorised for focus: the register refused 1 claim there.

All 49 choline capsules

Iodine

2 authorised claims · 45 capsules · ingredient page
  • “Iodine contributes to normal cognitive function” · Focus
  • “Iodine contributes to the normal production of thyroid hormones and normal thyroid function” · Thyroid

All 45 iodine capsules

Pantothenic Acid

1 authorised claim · 36 capsules · ingredient page
  • “Pantothenic acid contributes to normal mental performance” · Focus

All 36 pantothenic acid capsules

Potassium

1 authorised claim · 32 capsules · ingredient page
  • “Potassium contributes to the maintenance of normal blood pressure” · Heart

All 32 potassium capsules

Glucomannan

2 authorised claims · 6 capsules · ingredient page
  • “Glucomannan contributes to the maintenance of normal blood cholesterol levels” · Heart
  • “Glucomannan in the context of an energy restricted diet contributes to weight loss” · Weight

All 6 glucomannan capsules

Thiamine

1 authorised claim · 5 capsules · ingredient page
  • “Thiamine contributes to the normal function of the heart” · Heart

All 5 thiamine capsules

Beta Glucans

1 authorised claim · 4 capsules · ingredient page
  • “Beta-glucans contribute to the maintenance of normal blood cholesterol levels” · Heart

All 4 beta glucans capsules

Chitosan

1 authorised claim · 4 capsules · ingredient page
  • “Chitosan contributes to the maintenance of normal blood cholesterol levels” · Heart

Not authorised for weight: the register refused 1 claim there.

All 4 chitosan capsules

Betaine

1 authorised claim · 2 capsules · ingredient page
  • “Betaine contributes to normal homocysteine metabolism” · Heart

Alpha-Linolenic Acid

1 authorised claim · 1 capsule · ingredient page
  • “ALA contributes to the maintenance of normal blood cholesterol levels” · Heart

Not authorised for heart: the register refused 1 claim there.

Oleic acid

1 authorised claim · 1 capsule · ingredient page
  • “Replacing saturated fats in the diet with unsaturated fats contributes to the maintenance of normal blood cholesterol levels. Oleic acid is an unsaturated fat.” · Heart

Assessed by the register and not authorised

The register looked at claims for these relating to thyroid and focus and testosterone and fertility and weight and heart and turned them down. Sellers may not make them. Prices are shown for ingredients you named; the rest link to their register page.

Support & information

Independent organisations for support and reliable information; none endorses any product on this site.