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BestCapsules

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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.

What do you want help with?

Where the register allows less than sellers suggest

Anything you already take or are considering?

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 Stress and Teeth and gums

1203 capsules across 25 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.

Stress. Very few ingredients hold authorised register claims in this area, and this page is honest about that: the split below shows what may be said and what may not. Ingredients people discuss for stress appear with their register status, and Mind's resources cover support that goes beyond nutrition.

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.

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 teeth” · Teeth and gums

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

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 gums” · Teeth and gums
  • “Vitamin C contributes to normal collagen formation for the normal function of teeth” · Teeth and gums

All 17 vitamin c capsules

Vitamin D

1 authorised claim · 13 capsules · ingredient page
  • “Vitamin D contributes to the maintenance of normal teeth” · Teeth and gums

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

All 13 vitamin d capsules

Calcium

1 authorised claim · 5 capsules · ingredient page
  • “Calcium is needed for the maintenance of normal teeth” · Teeth and gums

All 5 calcium capsules

Selenium

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

Assessed by the register and not authorised

The register looked at claims for these relating to thyroid and stress and teeth and gums and turned them down. Sellers may not make them. Prices are shown for ingredients you named; the rest link to their register page.

Support & information

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