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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 Blood sugar and Teeth and gums and Mood

1351 capsules across 41 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.

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.

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.

Mood. The register authorises wording for some nutrients relating to normal psychological function, and this page shows which, quoted exactly. Low mood that persists deserves real support rather than a capsule; Mind's information and helplines below are a good place to start.

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

2 authorised claims · 334 capsules · ingredient page
  • “Magnesium contributes to normal psychological function” · Mood
  • “Magnesium contributes to the maintenance of normal teeth” · Teeth and gums

Not authorised for blood and iron or blood sugar: the register refused 2 claims there.

All 334 magnesium capsules

Vitamin C

4 authorised claims · 332 capsules · ingredient page
  • “Vitamin C contributes to normal psychological function” · Mood
  • “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
  • “Vitamin C increases iron absorption” · Blood and iron

All 332 vitamin c 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

Vitamin B6

2 authorised claims · 185 capsules · ingredient page
  • “Vitamin B6 contributes to normal psychological function” · Mood
  • “Vitamin B6 contributes to normal red blood cell formation” · Blood and iron

Not authorised for teeth and gums or mood: the register refused 2 claims there.

All 185 vitamin b6 capsules

Vitamin B12

2 authorised claims · 163 capsules · ingredient page
  • “Vitamin B12 contributes to normal psychological function” · Mood
  • “Vitamin B12 contributes to normal red blood cell formation” · Blood and iron

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

All 163 vitamin b12 capsules

Folate

2 authorised claims · 138 capsules · ingredient page
  • “Folate contributes to normal psychological function” · Mood
  • “Folate contributes to normal blood formation” · Blood and iron

All 138 folate capsules

Biotin

1 authorised claim · 124 capsules · ingredient page
  • “Biotin contributes to normal psychological function” · Mood

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

All 124 biotin capsules

Vitamin K

1 authorised claim · 106 capsules · ingredient page
  • “Vitamin K contributes to normal blood clotting” · Blood and iron

All 106 vitamin k capsules

Calcium

2 authorised claims · 96 capsules · ingredient page
  • “Calcium contributes to normal blood clotting” · Blood and iron
  • “Calcium is needed for the maintenance of normal teeth” · Teeth and gums

All 96 calcium capsules

Iron

2 authorised claims · 87 capsules · ingredient page
  • “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

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

1 authorised claim · 58 capsules · ingredient page
  • “Copper contributes to normal iron transport in the body” · Blood and iron

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

All 58 copper capsules

Niacin

1 authorised claim · 46 capsules · ingredient page
  • “Niacin contributes to normal psychological function” · Mood

All 46 niacin capsules

Riboflavin

1 authorised claim · 36 capsules · ingredient page
  • “Riboflavin contributes to the maintenance of normal red blood cells” · Blood and iron

All 36 riboflavin capsules

Thiamine

1 authorised claim · 5 capsules · ingredient page
  • “Thiamine contributes to normal psychological function” · Mood

All 5 thiamine 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 blood and iron and blood sugar and teeth and gums and mood 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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