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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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Libido and Bones and Thyroid

1197 capsules across 30 ingredients

Libido. Almost no ingredient holds an authorised register claim in this area, which is itself useful information: sellers may not claim what is not authorised. What people discuss appears below with its actual register status.

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.

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 · 28 capsules · ingredient page
  • “Magnesium contributes to the maintenance of normal bones” · Bones

All 28 magnesium capsules

Vitamin C

1 authorised claim · 17 capsules · ingredient page
  • “Vitamin C contributes to normal collagen formation for the normal function of bones” · Bones

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

1 authorised claim · 12 capsules · ingredient page
  • “Zinc contributes to the maintenance of normal bones” · Bones

Not authorised for thyroid: the register refused 1 claim 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

Selenium

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

Manganese

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

Vitamin K

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

Assessed by the register and not authorised

The register looked at claims for these relating to libido and bones 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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