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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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Blood and iron and Blood sugar

13 capsules across 9 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.

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 · 7 capsules · ingredient page
  • “Vitamin C increases iron absorption” · Blood and iron

All 7 vitamin c capsules

Copper

1 authorised claim · 2 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.

Vitamin B12

1 authorised claim · 2 capsules · ingredient page
  • “Vitamin B12 contributes to normal red blood cell formation” · Blood and iron

Vitamin B6

1 authorised claim · 2 capsules · ingredient page
  • “Vitamin B6 contributes to normal red blood cell formation” · Blood and iron

Chromium

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

Folate

1 authorised claim · 1 capsule · ingredient page
  • “Folate contributes to normal blood formation” · Blood and iron

Riboflavin

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

Vitamin K

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

Assessed by the register and not authorised

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