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BestCapsules

Find capsules by goal

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.

Thyroid and Tiredness and fatigue and Skin, hair and nails

16 capsules across 26 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.

Tiredness and fatigue. The register's phrase is 'a reduction of tiredness and fatigue', and a surprising number of everyday nutrients hold that authorised wording. This page shows which, quoted exactly, alongside ingredients people discuss without an authorised claim. Persistent tiredness is worth raising with a GP; the NHS link below covers self-help basics.

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

2 authorised claims · 7 capsules · ingredient page
  • “Vitamin C contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue
  • “Vitamin C contributes to normal collagen formation for the normal function of skin” · Skin, hair and nails

Not authorised for tiredness and fatigue: the register refused 1 claim there.

All 7 vitamin c capsules

Zinc

3 authorised claims · 5 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 thyroid or tiredness and fatigue: the register refused 2 claims there.

All 5 zinc capsules

Biotin

2 authorised claims · 2 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 tiredness and fatigue: the register refused 3 claims there.

Copper

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

Not authorised for tiredness and fatigue: the register refused 1 claim there.

Magnesium

1 authorised claim · 2 capsules · ingredient page
  • “Magnesium contributes to a reduction of tiredness and fatigue” · Tiredness and fatigue

Selenium

3 authorised claims · 2 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
  • “Selenium contributes to the normal thyroid function” · Thyroid

Vitamin A

1 authorised claim · 2 capsules · ingredient page
  • “Vitamin A contributes to the maintenance of normal skin” · Skin, hair and nails

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

Vitamin B12

1 authorised claim · 2 capsules · ingredient page
  • “Vitamin B12 contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

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

Vitamin B6

1 authorised claim · 2 capsules · ingredient page
  • “Vitamin B6 contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

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

Folate

1 authorised claim · 1 capsule · ingredient page
  • “Folate contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

Iodine

2 authorised claims · 1 capsule · ingredient page
  • “Iodine contributes to the maintenance of normal skin” · Skin, hair and nails
  • “Iodine contributes to the normal production of thyroid hormones and normal thyroid function” · Thyroid

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

Niacin

2 authorised claims · 1 capsule · ingredient page
  • “Niacin contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue
  • “Niacin contributes to the maintenance of normal skin” · Skin, hair and nails

Riboflavin

2 authorised claims · 1 capsule · ingredient page
  • “Riboflavin contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue
  • “Riboflavin contributes to the maintenance of normal skin” · Skin, hair and nails

Assessed by the register and not authorised

The register looked at claims for these relating to thyroid and tiredness and fatigue 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.

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