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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.

Blood sugar and Immunity and Skin, hair and nails

1544 capsules across 74 ingredients

Blood sugar. A small number of ingredients hold authorised register wording about normal blood glucose levels, quoted exactly on their pages; a much larger number of claims about blood sugar were assessed and refused. Nothing here is about treating or preventing diabetes, and anyone managing blood glucose should follow their care team's advice. Diabetes UK is the specialist charity.

Immunity. This page gathers ingredients whose GB register claims relate to the normal function of the immune system, with the exact authorised wording quoted on each ingredient page. Anything not authorised may not be claimed by sellers, and we quote that status too. A balanced diet, sleep and vaccination advice from the NHS come before any capsule.

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.

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

3 authorised claims · 332 capsules · ingredient page
  • “Vitamin C contributes to maintain the normal function of the immune system during and after intense physical exercise” · Immunity
  • “Vitamin C contributes to the normal function of the immune system” · Immunity
  • “Vitamin C contributes to normal collagen formation for the normal function of skin” · Skin, hair and nails

All 332 vitamin c capsules

Zinc

4 authorised claims · 249 capsules · ingredient page
  • “Zinc contributes to the normal function of the immune system” · Immunity
  • “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

All 249 zinc capsules

Vitamin D

2 authorised claims · 232 capsules · ingredient page
  • “Vitamin D contributes to the normal function of the immune system” · Immunity
  • “Vitamin D contributes to the normal function of the immune system in children.” · Immunity

All 232 vitamin d capsules

Vitamin B6

1 authorised claim · 185 capsules · ingredient page
  • “Vitamin B6 contributes to the normal function of the immune system” · Immunity

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

All 185 vitamin b6 capsules

Vitamin B12

1 authorised claim · 163 capsules · ingredient page
  • “Vitamin B12 contributes to the normal function of the immune system” · Immunity

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

All 163 vitamin b12 capsules

Folate

1 authorised claim · 138 capsules · ingredient page
  • “Folate contributes to the normal function of the immune system” · Immunity

All 138 folate 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: the register refused 1 claim there.

All 124 biotin capsules

Selenium

3 authorised claims · 95 capsules · ingredient page
  • “Selenium contributes to the normal function of the immune system” · Immunity
  • “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

Iron

1 authorised claim · 87 capsules · ingredient page
  • “Iron contributes to the normal function of the immune system” · Immunity

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

All 87 iron capsules

Chromium

1 authorised claim · 62 capsules · ingredient page
  • “Chromium contributes to the maintenance of normal blood glucose levels” · Blood sugar

All 62 chromium capsules

Copper

3 authorised claims · 58 capsules · ingredient page
  • “Copper contributes to the normal function of the immune system” · Immunity
  • “Copper contributes to normal hair pigmentation” · Skin, hair and nails
  • “Copper contributes to normal skin pigmentation” · Skin, hair and nails

Not authorised for blood sugar: the register refused 1 claim there.

All 58 copper capsules

Vitamin A

2 authorised claims · 54 capsules · ingredient page
  • “Vitamin A contributes to the normal function of the immune system” · Immunity
  • “Vitamin A 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 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

Assessed by the register and not authorised

The register looked at claims for these relating to blood sugar and immunity and skin, hair and nails 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

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