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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.

Blood and iron and Tiredness and fatigue and Skin, hair and nails

87 capsules across 38 ingredients

Blood and iron. Ingredients here hold register wording about normal red blood cell formation, oxygen transport, iron absorption or normal blood clotting, quoted exactly on their pages. Suspected iron deficiency needs a blood test before a supplement; the NHS page below explains why.

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

3 authorised claims · 36 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
  • “Vitamin C increases iron absorption” · Blood and iron

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

All 36 vitamin c capsules

Zinc

3 authorised claims · 32 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 tiredness and fatigue: the register refused 1 claim there.

All 32 zinc capsules

Vitamin B6

2 authorised claims · 24 capsules · ingredient page
  • “Vitamin B6 contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue
  • “Vitamin B6 contributes to normal red blood cell formation” · Blood and iron

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

All 24 vitamin b6 capsules

Magnesium

1 authorised claim · 18 capsules · ingredient page
  • “Magnesium contributes to a reduction of tiredness and fatigue” · Tiredness and fatigue

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

All 18 magnesium capsules

Selenium

2 authorised claims · 18 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 18 selenium capsules

Vitamin B12

2 authorised claims · 14 capsules · ingredient page
  • “Vitamin B12 contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue
  • “Vitamin B12 contributes to normal red blood cell formation” · Blood and iron

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

All 14 vitamin b12 capsules

Biotin

2 authorised claims · 13 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.

All 13 biotin capsules

Copper

3 authorised claims · 9 capsules · ingredient page
  • “Copper contributes to normal hair pigmentation” · Skin, hair and nails
  • “Copper contributes to normal skin pigmentation” · Skin, hair and nails
  • “Copper contributes to normal iron transport in the body” · Blood and iron

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

All 9 copper capsules

Iron

3 authorised claims · 9 capsules · ingredient page
  • “Iron contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue
  • “Iron contributes to normal formation of red blood cells and haemoglobin” · Blood and iron
  • “Iron contributes to normal oxygen transport in the body” · Blood and iron

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

All 9 iron capsules

Iodine

1 authorised claim · 8 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 8 iodine capsules

Folate

2 authorised claims · 7 capsules · ingredient page
  • “Folate contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue
  • “Folate contributes to normal blood formation” · Blood and iron

All 7 folate capsules

Vitamin K

1 authorised claim · 7 capsules · ingredient page
  • “Vitamin K contributes to normal blood clotting” · Blood and iron

All 7 vitamin k capsules

Calcium

1 authorised claim · 5 capsules · ingredient page
  • “Calcium contributes to normal blood clotting” · Blood and iron

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

All 5 calcium capsules

Niacin

2 authorised claims · 5 capsules · 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

All 5 niacin capsules

Pantothenic Acid

1 authorised claim · 5 capsules · ingredient page
  • “Pantothenic acid contributes to the reduction of tiredness and fatigue” · Tiredness and fatigue

All 5 pantothenic acid capsules

Riboflavin

3 authorised claims · 5 capsules · 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
  • “Riboflavin contributes to the maintenance of normal red blood cells” · Blood and iron

All 5 riboflavin capsules

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.

Assessed by the register and not authorised

The register looked at claims for these relating to blood and iron 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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