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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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Joints and Focus and Teeth and gums and Thyroid

1470 capsules across 58 ingredients

Joints. Joints carry the largest set of refused claims in the register: glucosamine, chondroitin, MSM, turmeric and collagen-for-joints wording were all assessed and turned down. What is authorised is narrow and quoted exactly on the ingredient pages: vitamin C for normal collagen formation for the normal function of cartilage, and manganese for normal formation of connective tissue. Versus Arthritis is the specialist charity for anything beyond nutrition.

Focus. Some nutrients hold register claims relating to normal cognitive or psychological function, quoted exactly on their pages. The wording is precise and worth reading as written; anything beyond it is marketing, not authorised claim.

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.

Thyroid. Only iodine and selenium hold authorised register wording about the thyroid, quoted exactly on their pages. Thyroid conditions are diagnosed and managed by a GP, and the British Thyroid Foundation 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

Magnesium

1 authorised claim · 27 capsules · ingredient page
  • “Magnesium contributes to the maintenance of normal teeth” · Teeth and gums

All 27 magnesium capsules

Vitamin C

3 authorised claims · 17 capsules · ingredient page
  • “Vitamin C contributes to normal collagen formation for the normal function of cartilage” · Joints
  • “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

All 17 vitamin c capsules

Vitamin D

1 authorised claim · 13 capsules · ingredient page
  • “Vitamin D contributes to the maintenance of normal teeth” · Teeth and gums

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

All 13 vitamin d capsules

Zinc

1 authorised claim · 11 capsules · ingredient page
  • “Zinc contributes to normal cognitive function” · Focus

Not authorised for thyroid or joints or teeth and gums: the register refused 3 claims there.

All 11 zinc capsules

Calcium

1 authorised claim · 5 capsules · ingredient page
  • “Calcium is needed for the maintenance of normal teeth” · Teeth and gums

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

All 5 calcium capsules

Copper

1 authorised claim · 4 capsules · ingredient page
  • “Copper contributes to maintenance of normal connective tissues” · Joints

All 4 copper capsules

Iron

2 authorised claims · 4 capsules · ingredient page
  • “Iron contributes to normal cognitive function” · Focus
  • “Iron contributes to normal cognitive development of children” · Focus

All 4 iron capsules

Selenium

1 authorised claim · 3 capsules · ingredient page
  • “Selenium contributes to the normal thyroid function” · Thyroid

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

Manganese

1 authorised claim · 2 capsules · ingredient page
  • “Manganese contributes to the normal formation of connective tissue” · Joints

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

Pantothenic Acid

1 authorised claim · 1 capsule · ingredient page
  • “Pantothenic acid contributes to normal mental performance” · Focus

Assessed by the register and not authorised

The register looked at claims for these relating to joints and focus and teeth and gums and thyroid 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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