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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.

  • None yet. Type an ingredient in the box above, for example “magnesium” or “turmeric”.

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

Teeth and gums and Skin, hair and nails and Digestion

1426 capsules across 69 ingredients

Teeth and gums. The register authorises wording about the maintenance of normal teeth for several minerals and vitamins, quoted exactly on their pages. Brushing, fluoride and regular check-ups do the real work; the Oral Health Foundation is the specialist charity.

Skin, hair and nails. The register authorises specific wording for several nutrients relating to normal skin, hair or nails, and this page collects them with the wording quoted exactly. Marketing in this category runs far ahead of the register; the split below shows exactly where the line sits.

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.

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

Magnesium

1 authorised claim · 334 capsules · ingredient page
  • “Magnesium contributes to the maintenance of normal teeth” · Teeth and gums

All 334 magnesium capsules

Vitamin C

3 authorised claims · 332 capsules · ingredient page
  • “Vitamin C contributes to normal collagen formation for the normal function of skin” · Skin, hair and nails
  • “Vitamin C contributes to normal collagen formation for the normal function of gums” · Teeth and gums
  • “Vitamin C contributes to normal collagen formation for the normal function of teeth” · Teeth and gums

All 332 vitamin c capsules

Zinc

3 authorised claims · 249 capsules · ingredient page
  • “Zinc contributes to the maintenance of normal nails” · Skin, hair and nails
  • “Zinc contributes to the maintenance of normal skin” · Skin, hair and nails
  • “Zinc contributes to the maintenance of normal hair” · Skin, hair and nails

Not authorised for teeth and gums: the register refused 1 claim there.

All 249 zinc capsules

Vitamin D

1 authorised claim · 232 capsules · ingredient page
  • “Vitamin D contributes to the maintenance of normal teeth” · Teeth and gums

All 232 vitamin d capsules

Biotin

2 authorised claims · 124 capsules · ingredient page
  • “Biotin contributes to the maintenance of normal hair” · Skin, hair and nails
  • “Biotin contributes to the maintenance of normal skin” · Skin, hair and nails

Not authorised for skin, hair and nails or teeth and gums: the register refused 2 claims there.

All 124 biotin capsules

Calcium

2 authorised claims · 96 capsules · ingredient page
  • “Calcium contributes to the normal function of digestive enzymes” · Digestion
  • “Calcium is needed for the maintenance of normal teeth” · Teeth and gums

All 96 calcium capsules

Selenium

2 authorised claims · 95 capsules · ingredient page
  • “Selenium contributes to the maintenance of normal nails” · Skin, hair and nails
  • “Selenium contributes to the maintenance of normal hair” · Skin, hair and nails

All 95 selenium capsules

Copper

2 authorised claims · 58 capsules · ingredient page
  • “Copper contributes to normal hair pigmentation” · Skin, hair and nails
  • “Copper contributes to normal skin pigmentation” · Skin, hair and nails

All 58 copper capsules

Vitamin A

1 authorised claim · 54 capsules · ingredient page
  • “Vitamin A contributes to the maintenance of normal skin” · Skin, hair and nails

Not authorised for skin, hair and nails or teeth and gums: the register refused 3 claims there.

All 54 vitamin a capsules

Niacin

1 authorised claim · 46 capsules · ingredient page
  • “Niacin contributes to the maintenance of normal skin” · Skin, hair and nails

All 46 niacin capsules

Iodine

1 authorised claim · 45 capsules · ingredient page
  • “Iodine contributes to the maintenance of normal skin” · Skin, hair and nails

Not authorised for skin, hair and nails: the register refused 1 claim there.

All 45 iodine capsules

Riboflavin

1 authorised claim · 36 capsules · ingredient page
  • “Riboflavin contributes to the maintenance of normal skin” · Skin, hair and nails

All 36 riboflavin capsules

Activated Charcoal

1 authorised claim · 17 capsules · ingredient page
  • “Activated charcoal contributes to reducing excessive flatulence after eating” · Digestion

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

All 17 activated charcoal capsules

Chloride

1 authorised claim · 5 capsules · ingredient page
  • “Chloride contributes to normal digestion by production of hydrochloric acid in the stomach” · Digestion

All 5 chloride 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

Lactase enzyme

1 authorised claim · 3 capsules · ingredient page
  • “Lactase enzyme improves lactose digestion in individuals who have difficulty digesting lactose” · Digestion

All 3 lactase enzyme capsules

Phosphorus

1 authorised claim · 3 capsules · ingredient page
  • “Phosphorus contributes to the maintenance of normal teeth” · Teeth and gums

Assessed by the register and not authorised

The register looked at claims for these relating to teeth and gums and skin, hair and nails and digestion 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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