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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.

Teeth and gums and Thyroid and Muscles

1278 capsules across 42 ingredients

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.

Muscles. Ingredients here hold register claims relating to normal muscle function or muscle protein, quoted exactly on their pages. Resistance exercise and overall protein intake are the fundamentals the claims assume; the NHS exercise guidance below is a good starting point.

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

2 authorised claims · 108 capsules · ingredient page
  • “Magnesium contributes to normal muscle function” · Muscles
  • “Magnesium contributes to the maintenance of normal teeth” · Teeth and gums

All 108 magnesium capsules

Vitamin C

2 authorised claims · 68 capsules · ingredient page
  • “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 68 vitamin c capsules

Vitamin D

3 authorised claims · 60 capsules · ingredient page
  • “Vitamin D contributes to the maintenance of normal muscle function” · Muscles
  • “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.” · Muscles
  • “Vitamin D contributes to the maintenance of normal teeth” · Teeth and gums

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

All 60 vitamin d capsules

Calcium

2 authorised claims · 26 capsules · ingredient page
  • “Calcium contributes to normal muscle function” · Muscles
  • “Calcium is needed for the maintenance of normal teeth” · Teeth and gums

All 26 calcium capsules

Selenium

1 authorised claim · 16 capsules · ingredient page
  • “Selenium contributes to the normal thyroid function” · Thyroid

All 16 selenium capsules

creatine

2 authorised claims · 13 capsules · ingredient page
  • “Daily creatine consumption can enhance the effect of resistance training on muscle strength in adults over the age of 55.” · Muscles
  • “Creatine increases physical performance in successive bursts of short-term, high intensity exercise” · Muscles

Not authorised for muscles: the register refused 3 claims there.

All 13 creatine capsules

Potassium

1 authorised claim · 13 capsules · ingredient page
  • “Potassium contributes to normal muscle function” · Muscles

All 13 potassium capsules

Iodine

1 authorised claim · 8 capsules · ingredient page
  • “Iodine contributes to the normal production of thyroid hormones and normal thyroid function” · Thyroid

All 8 iodine capsules

Protein

2 authorised claims · 1 capsule · ingredient page
  • “Protein contributes to a growth in muscle mass” · Muscles
  • “Protein contributes to the maintenance of muscle mass” · Muscles

Assessed by the register and not authorised

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