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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 Teeth and gums and Weight

1309 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.

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.

Weight. The register takes a strict line on weight claims, and very little is authorised. This page shows the real status of ingredients people discuss for weight, quoted exactly. The NHS Better Health programme below is the evidence-based starting point.

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

1 authorised claim · 257 capsules · ingredient page
  • “Magnesium contributes to the maintenance of normal teeth” · Teeth and gums

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

All 257 magnesium capsules

Vitamin C

3 authorised claims · 238 capsules · ingredient page
  • “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 238 vitamin c capsules

Vitamin D

1 authorised claim · 172 capsules · ingredient page
  • “Vitamin D contributes to the maintenance of normal teeth” · Teeth and gums

All 172 vitamin d capsules

Vitamin B6

1 authorised claim · 144 capsules · ingredient page
  • “Vitamin B6 contributes to normal red blood cell formation” · Blood and iron

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

All 144 vitamin b6 capsules

Vitamin B12

1 authorised claim · 123 capsules · ingredient page
  • “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 123 vitamin b12 capsules

Folate

1 authorised claim · 104 capsules · ingredient page
  • “Folate contributes to normal blood formation” · Blood and iron

All 104 folate capsules

Vitamin K

1 authorised claim · 80 capsules · ingredient page
  • “Vitamin K contributes to normal blood clotting” · Blood and iron

All 80 vitamin k capsules

Calcium

2 authorised claims · 76 capsules · ingredient page
  • “Calcium contributes to normal blood clotting” · Blood and iron
  • “Calcium is needed for the maintenance of normal teeth” · Teeth and gums

Not authorised for weight: the register refused 1 claim there.

All 76 calcium capsules

Iron

2 authorised claims · 60 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 60 iron capsules

Copper

1 authorised claim · 42 capsules · ingredient page
  • “Copper contributes to normal iron transport in the body” · Blood and iron

All 42 copper capsules

Riboflavin

1 authorised claim · 29 capsules · ingredient page
  • “Riboflavin contributes to the maintenance of normal red blood cells” · Blood and iron

All 29 riboflavin capsules

Glucomannan

1 authorised claim · 3 capsules · ingredient page
  • “Glucomannan in the context of an energy restricted diet contributes to weight loss” · Weight

Phosphorus

1 authorised claim · 2 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 teeth and gums and weight 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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