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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.

Thyroid and Mood and Joints

1201 capsules across 35 ingredients

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.

Mood. The register authorises wording for some nutrients relating to normal psychological function, and this page shows which, quoted exactly. Low mood that persists deserves real support rather than a capsule; Mind's information and helplines below are a good place to start.

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.

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 normal psychological function” · Mood

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 cartilage” · Joints
  • “Vitamin C contributes to normal psychological function” · Mood

All 17 vitamin c capsules

Vitamin B6

1 authorised claim · 10 capsules · ingredient page
  • “Vitamin B6 contributes to normal psychological function” · Mood

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

All 10 vitamin b6 capsules

Biotin

1 authorised claim · 9 capsules · ingredient page
  • “Biotin contributes to normal psychological function” · Mood

All 9 biotin capsules

Niacin

1 authorised claim · 5 capsules · ingredient page
  • “Niacin contributes to normal psychological function” · Mood

All 5 niacin capsules

Copper

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

All 4 copper capsules

Folate

1 authorised claim · 3 capsules · ingredient page
  • “Folate contributes to normal psychological function” · Mood

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 normal formation of connective tissue” · Joints

Vitamin B12

1 authorised claim · 1 capsule · ingredient page
  • “Vitamin B12 contributes to normal psychological function” · Mood

Assessed by the register and not authorised

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