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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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Blood and iron

944 capsules across 12 ingredients

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.

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

1 authorised claim · 68 capsules · ingredient page
  • “Vitamin C increases iron absorption”

All 68 vitamin c capsules

Vitamin B6

1 authorised claim · 44 capsules · ingredient page
  • “Vitamin B6 contributes to normal red blood cell formation”

All 44 vitamin b6 capsules

Vitamin B12

1 authorised claim · 34 capsules · ingredient page
  • “Vitamin B12 contributes to normal red blood cell formation”

All 34 vitamin b12 capsules

Folate

1 authorised claim · 30 capsules · ingredient page
  • “Folate contributes to normal blood formation”

All 30 folate capsules

Calcium

1 authorised claim · 26 capsules · ingredient page
  • “Calcium contributes to normal blood clotting”

All 26 calcium capsules

Vitamin K

1 authorised claim · 20 capsules · ingredient page
  • “Vitamin K contributes to normal blood clotting”

All 20 vitamin k capsules

Iron

2 authorised claims · 17 capsules · ingredient page
  • “Iron contributes to normal formation of red blood cells and haemoglobin”
  • “Iron contributes to normal oxygen transport in the body”

All 17 iron capsules

Copper

1 authorised claim · 13 capsules · ingredient page
  • “Copper contributes to normal iron transport in the body”

All 13 copper capsules

Riboflavin

1 authorised claim · 11 capsules · ingredient page
  • “Riboflavin contributes to the maintenance of normal red blood cells”

All 11 riboflavin capsules

Assessed by the register and not authorised

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

Independent organisations for support and reliable information; none endorses any product on this site.

The full blood and iron page, every ingredient