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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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Testosterone and Weight and Thyroid

648 capsules across 23 ingredients

Testosterone. Only a small number of ingredients hold register claims mentioning testosterone, and this page quotes them exactly. Claims in this category are heavily marketed well beyond what the register authorises; the split below shows the line.

Weight. The register takes a strict line on weight claims, and very little is authorised. This page shows the real status of ingredients people discuss for weight, quoted exactly. The NHS Better Health programme below is the evidence-based starting point.

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

Zinc

1 authorised claim · 54 capsules · ingredient page

“Zinc contributes to the maintenance of normal testosterone levels in the blood” · Testosterone

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

All 54 zinc capsules

Selenium

1 authorised claim · 16 capsules · ingredient page

“Selenium contributes to the normal thyroid function” · Thyroid

All 16 selenium 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

Glucomannan

1 authorised claim · 2 capsules · ingredient page

“Glucomannan in the context of an energy restricted diet contributes to weight loss” · Weight

Assessed by the register and not authorised

The register looked at claims for these relating to testosterone and weight 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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