Find capsules by goal
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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- Thyroid
- Tiredness and fatigue
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.
Metabolism and Thyroid
85 capsules across 24 ingredientsMetabolism. The register's phrase is 'contributes to normal energy-yielding metabolism', and many everyday vitamins and minerals hold it. It is not a claim about weight or about feeling energetic, which is why this goal sits apart from Weight and from Tiredness and fatigue. Wording is quoted exactly on each ingredient page.
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
4 authorised claims · 28 capsules · ingredient page- “Zinc contributes to normal carbohydrate metabolism” · Metabolism
- “Zinc contributes to normal macronutrient metabolism” · Metabolism
- “Zinc contributes to normal metabolism of fatty acids” · Metabolism
- “Zinc contributes to normal metabolism of vitamin A” · Metabolism
Not authorised for thyroid: the register refused 1 claim there.
Vitamin C
1 authorised claim · 27 capsules · ingredient page- “Vitamin C contributes to normal energy-yielding metabolism” · Metabolism
Vitamin B6
3 authorised claims · 22 capsules · ingredient page- “Vitamin B6 contributes to normal energy-yielding metabolism” · Metabolism
- “Vitamin B6 contributes to normal homocysteine metabolism” · Metabolism
- “Vitamin B6 contributes to normal protein and glycogen metabolism” · Metabolism
Selenium
1 authorised claim · 15 capsules · ingredient page- “Selenium contributes to the normal thyroid function” · Thyroid
Magnesium
1 authorised claim · 14 capsules · ingredient page- “Magnesium contributes to normal energy-yielding metabolism” · Metabolism
Not authorised for metabolism: the register refused 2 claims there.
Biotin
2 authorised claims · 12 capsules · ingredient page- “Biotin contributes to normal energy-yielding metabolism” · Metabolism
- “Biotin contributes to normal macronutrient metabolism” · Metabolism
Vitamin B12
2 authorised claims · 12 capsules · ingredient page- “Vitamin B12 contributes to normal energy-yielding metabolism” · Metabolism
- “Vitamin B12 contributes to normal homocysteine metabolism” · Metabolism
Iodine
2 authorised claims · 8 capsules · ingredient page- “Iodine contributes to normal energy-yielding metabolism” · Metabolism
- “Iodine contributes to the normal production of thyroid hormones and normal thyroid function” · Thyroid
Iron
1 authorised claim · 8 capsules · ingredient page- “Iron contributes to normal energy-yielding metabolism” · Metabolism
Not authorised for metabolism: the register refused 1 claim there.
Copper
1 authorised claim · 7 capsules · ingredient page- “Copper contributes to normal energy-yielding metabolism” · Metabolism
Chromium
1 authorised claim · 5 capsules · ingredient page- “Chromium contributes to normal macronutrient metabolism” · Metabolism
Not authorised for metabolism: the register refused 2 claims there.
Folate
1 authorised claim · 5 capsules · ingredient page- “Folate contributes to normal homocysteine metabolism” · Metabolism
Manganese
1 authorised claim · 5 capsules · ingredient page- “Manganese contributes to normal energy-yielding metabolism” · Metabolism
Niacin
1 authorised claim · 5 capsules · ingredient page- “Niacin contributes to normal energy-yielding metabolism” · Metabolism
Pantothenic Acid
2 authorised claims · 5 capsules · ingredient page- “Pantothenic acid contributes to normal energy-yielding metabolism” · Metabolism
- “Pantothenic acid contributes to normal synthesis and metabolism of steroid hormones, vitamin D and some neurotransmitters” · Metabolism
Riboflavin
2 authorised claims · 5 capsules · ingredient page- “Riboflavin contributes to normal energy-yielding metabolism” · Metabolism
- “Riboflavin contributes to the normal metabolism of iron” · Metabolism
Calcium
1 authorised claim · 4 capsules · ingredient page- “Calcium contributes to normal energy-yielding metabolism” · Metabolism
Not authorised for metabolism: the register refused 1 claim there.
Choline
2 authorised claims · 3 capsules · ingredient page- “Choline contributes to normal homocysteine metabolism” · Metabolism
- “Choline contributes to normal lipid metabolism” · Metabolism
Vitamin A
1 authorised claim · 2 capsules · ingredient page- “Vitamin A contributes to normal iron metabolism” · Metabolism
Assessed by the register and not authorised
The register looked at claims for these relating to metabolism 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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