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BestCapsules

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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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Name it and the finder says whether the register authorises any claim for it for your goals, or refused one, or has never assessed it.

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Seller-stated only: vegan means the seller says vegan.

Digestion and Eyes and Thyroid

444 capsules across 32 ingredients

Digestion. The register authorises specific wording about digestion for a few nutrients, quoted exactly on their pages, and refused most of the probiotic and gut wording sellers reach for. The split below is the honest picture. Persistent digestive symptoms are a matter for a GP, and Guts UK is the specialist charity.

Eyes. Ingredients here hold register claims relating to the maintenance of normal vision, quoted exactly on their pages. Regular sight tests catch what supplements never will; the Macular Society and RNIB below are the specialist organisations.

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.

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

Zinc

1 authorised claim · 108 capsules · ingredient page
  • “Zinc contributes to the maintenance of normal vision” · Eyes

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

All 108 zinc capsules

Selenium

1 authorised claim · 45 capsules · ingredient page
  • “Selenium contributes to the normal thyroid function” · Thyroid

All 45 selenium capsules

Calcium

1 authorised claim · 41 capsules · ingredient page
  • “Calcium contributes to the normal function of digestive enzymes” · Digestion

All 41 calcium capsules

Iodine

1 authorised claim · 24 capsules · ingredient page
  • “Iodine contributes to the normal production of thyroid hormones and normal thyroid function” · Thyroid

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

All 24 iodine capsules

Vitamin A

1 authorised claim · 19 capsules · ingredient page
  • “Vitamin A contributes to the maintenance of normal vision” · Eyes

All 19 vitamin a capsules

Riboflavin

1 authorised claim · 17 capsules · ingredient page
  • “Riboflavin contributes to the maintenance of normal vision” · Eyes

All 17 riboflavin capsules

Activated Charcoal

1 authorised claim · 7 capsules · ingredient page
  • “Activated charcoal contributes to reducing excessive flatulence after eating” · Digestion

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

All 7 activated charcoal capsules

sugar beet fibre

1 authorised claim · 4 capsules · ingredient page
  • “Sugar beet fibre contributes to an increase in faecal bulk” · Digestion

Not authorised for digestion: the register refused 2 claims there.

All 4 sugar beet fibre capsules

Chloride

1 authorised claim · 3 capsules · ingredient page
  • “Chloride contributes to normal digestion by production of hydrochloric acid in the stomach” · Digestion

Lactase enzyme

1 authorised claim · 1 capsule · ingredient page
  • “Lactase enzyme improves lactose digestion in individuals who have difficulty digesting lactose” · Digestion

Assessed by the register and not authorised

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

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