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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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Joints and Blood sugar and Fertility

1103 capsules across 38 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.

Blood sugar. A small number of ingredients hold authorised register wording about normal blood glucose levels, quoted exactly on their pages; a much larger number of claims about blood sugar were assessed and refused. Nothing here is about treating or preventing diabetes, and anyone managing blood glucose should follow their care team's advice. Diabetes UK is the specialist charity.

Fertility. Ingredients here hold register claims relating to fertility and reproduction, quoted exactly. UK guidance on folic acid before and during early pregnancy is the best-established nutritional advice in this area, and Fertility Network UK below offers wider support.

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

Vitamin C

1 authorised claim · 332 capsules · ingredient page
  • “Vitamin C contributes to normal collagen formation for the normal function of cartilage” · Joints

All 332 vitamin c capsules

Zinc

1 authorised claim · 249 capsules · ingredient page
  • “Zinc contributes to normal fertility and reproduction” · Fertility

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

All 249 zinc capsules

Folate

1 authorised claim · 138 capsules · ingredient page
  • “Folate contributes to maternal tissue growth during pregnancy” · Fertility

All 138 folate capsules

Selenium

1 authorised claim · 95 capsules · ingredient page
  • “Selenium contributes to normal spermatogenesis” · Fertility

All 95 selenium capsules

Chromium

1 authorised claim · 62 capsules · ingredient page
  • “Chromium contributes to the maintenance of normal blood glucose levels” · Blood sugar

All 62 chromium capsules

Copper

1 authorised claim · 58 capsules · ingredient page
  • “Copper contributes to maintenance of normal connective tissues” · Joints

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

All 58 copper capsules

Manganese

1 authorised claim · 32 capsules · ingredient page
  • “Manganese contributes to the normal formation of connective tissue” · Joints

All 32 manganese capsules

Assessed by the register and not authorised

The register looked at claims for these relating to joints and blood sugar and fertility 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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