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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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Seller-stated only: vegan means the seller says vegan.

Joints and Thyroid and Bones and Eyes

1321 capsules across 46 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.

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.

Bones. Ingredients here hold register claims relating to the maintenance of normal bones, quoted exactly on their pages. Weight-bearing exercise and dietary calcium are the foundations, and the Royal Osteoporosis Society is the specialist charity for anything further.

Eyes. Ingredients here hold register claims relating to the maintenance of normal vision, quoted exactly on their pages. Regular sight tests catch what supplements never will; the Macular Society and RNIB below are the specialist organisations.

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 bones” · Bones

All 27 magnesium capsules

Vitamin C

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

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

All 17 vitamin c capsules

Vitamin D

3 authorised claims · 13 capsules · ingredient page
  • “Vitamin D contributes to the maintenance of normal bones” · Bones
  • “Vitamin D is needed for normal growth and development of bone in children.” · Bones
  • “Vitamin D helps to reduce the risk of falling associated with postural instability and muscle weakness. Falling is a risk factor for bone fractures among men and women 60 years of age and older.” · Bones

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

All 13 vitamin d capsules

Zinc

2 authorised claims · 12 capsules · ingredient page
  • “Zinc contributes to the maintenance of normal bones” · Bones
  • “Zinc contributes to the maintenance of normal vision” · Eyes

Not authorised for thyroid or joints: the register refused 2 claims there.

All 12 zinc capsules

Calcium

3 authorised claims · 5 capsules · ingredient page
  • “Calcium helps to reduce the loss of bone mineral in post-menopausal women. Low bone mineral density is a risk factor for osteoporotic bone fractures” · Bones
  • “Calcium is needed for normal growth and development of bone in children.” · Bones
  • “Calcium is needed for the maintenance of normal bones” · Bones

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

Selenium

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

Manganese

2 authorised claims · 2 capsules · ingredient page
  • “Manganese contributes to the maintenance of normal bones” · Bones
  • “Manganese contributes to the normal formation of connective tissue” · Joints

Vitamin K

1 authorised claim · 2 capsules · ingredient page
  • “Vitamin K contributes to the maintenance of normal bones” · Bones

Riboflavin

1 authorised claim · 1 capsule · ingredient page
  • “Riboflavin contributes to the maintenance of normal vision” · Eyes

Vitamin A

1 authorised claim · 1 capsule · ingredient page
  • “Vitamin A contributes to the maintenance of normal vision” · Eyes

Not authorised for bones: the register refused 2 claims there.

Assessed by the register and not authorised

The register looked at claims for these relating to joints and thyroid and bones and eyes 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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