Metabolism
22 ingredients with authorised wording · 10 assessed and refused · 1158 capsules
Very little holds an authorised GB register claim for metabolism; what does is quoted below, exactly. 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.
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.
Combine with another goal, or check an ingredient you take →
Holds an authorised claim
Magnesium
1 authorised claim · 334 capsules · ingredient page- “Magnesium contributes to normal energy-yielding metabolism”
The register also refused 2 claims for magnesium relating to metabolism; only the wording above may be used.
Vitamin C
1 authorised claim · 332 capsules · ingredient page- “Vitamin C contributes to normal energy-yielding metabolism”
Zinc
4 authorised claims · 249 capsules · ingredient page- “Zinc contributes to normal carbohydrate metabolism”
- “Zinc contributes to normal macronutrient metabolism”
- “Zinc contributes to normal metabolism of fatty acids”
- and 1 more on the ingredient page
Vitamin B6
3 authorised claims · 185 capsules · ingredient page- “Vitamin B6 contributes to normal energy-yielding metabolism”
- “Vitamin B6 contributes to normal homocysteine metabolism”
- “Vitamin B6 contributes to normal protein and glycogen metabolism”
Vitamin B12
2 authorised claims · 163 capsules · ingredient page- “Vitamin B12 contributes to normal energy-yielding metabolism”
- “Vitamin B12 contributes to normal homocysteine metabolism”
Folate
1 authorised claim · 138 capsules · ingredient page- “Folate contributes to normal homocysteine metabolism”
Biotin
2 authorised claims · 124 capsules · ingredient page- “Biotin contributes to normal energy-yielding metabolism”
- “Biotin contributes to normal macronutrient metabolism”
Calcium
1 authorised claim · 96 capsules · ingredient page- “Calcium contributes to normal energy-yielding metabolism”
The register also refused 1 claim for calcium relating to metabolism; only the wording above may be used.
Iron
1 authorised claim · 87 capsules · ingredient page- “Iron contributes to normal energy-yielding metabolism”
The register also refused 1 claim for iron relating to metabolism; only the wording above may be used.
Chromium
1 authorised claim · 62 capsules · ingredient page- “Chromium contributes to normal macronutrient metabolism”
The register also refused 2 claims for chromium relating to metabolism; only the wording above may be used.
Copper
1 authorised claim · 58 capsules · ingredient page- “Copper contributes to normal energy-yielding metabolism”
Vitamin A
1 authorised claim · 54 capsules · ingredient page- “Vitamin A contributes to normal iron metabolism”
Choline
2 authorised claims · 49 capsules · ingredient page- “Choline contributes to normal homocysteine metabolism”
- “Choline contributes to normal lipid metabolism”
Niacin
1 authorised claim · 46 capsules · ingredient page- “Niacin contributes to normal energy-yielding metabolism”
Iodine
1 authorised claim · 45 capsules · ingredient page- “Iodine contributes to normal energy-yielding metabolism”
Pantothenic Acid
2 authorised claims · 36 capsules · ingredient page- “Pantothenic acid contributes to normal energy-yielding metabolism”
- “Pantothenic acid contributes to normal synthesis and metabolism of steroid hormones, vitamin D and some neurotransmitters”
Riboflavin
2 authorised claims · 36 capsules · ingredient page- “Riboflavin contributes to normal energy-yielding metabolism”
- “Riboflavin contributes to the normal metabolism of iron”
Manganese
1 authorised claim · 32 capsules · ingredient page- “Manganese contributes to normal energy-yielding metabolism”
Molybdenum
1 authorised claim · 15 capsules · ingredient page- “Molybdenum contributes to normal sulphur amino acid metabolism”
The register also refused 1 claim for molybdenum relating to metabolism; only the wording above may be used.
Thiamine
1 authorised claim · 5 capsules · ingredient page- “Thiamine contributes to normal energy-yielding metabolism”
Phosphorus
1 authorised claim · 3 capsules · ingredient page- “Phosphorus contributes to normal energy-yielding metabolism”
Betaine
1 authorised claim · 2 capsules · ingredient page- “Betaine contributes to normal homocysteine metabolism”
Assessed by the register and not authorised
The register looked at claims for these relating to metabolism and turned them down. Sellers may not make them. Each links to the exact wording and to the capsules that carry it anyway.
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