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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.
- 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.
Testosterone and Mood and Fertility
1001 capsules across 17 ingredientsTestosterone. 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.
Mood. The register authorises wording for some nutrients relating to normal psychological function, and this page shows which, quoted exactly. Low mood that persists deserves real support rather than a capsule; Mind's information and helplines below are a good place to start.
Fertility. Ingredients here hold register claims relating to fertility and reproduction, quoted exactly. UK guidance on folic acid before and during early pregnancy is the best-established nutritional advice in this area, and Fertility Network UK below offers wider support.
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 · 334 capsules · ingredient page- “Magnesium contributes to normal psychological function” · Mood
Not authorised for fertility: the register refused 1 claim there.
Vitamin C
1 authorised claim · 332 capsules · ingredient page- “Vitamin C contributes to normal psychological function” · Mood
Zinc
2 authorised claims · 249 capsules · ingredient page- “Zinc contributes to normal fertility and reproduction” · Fertility
- “Zinc contributes to the maintenance of normal testosterone levels in the blood” · Testosterone
Vitamin B6
1 authorised claim · 185 capsules · ingredient page- “Vitamin B6 contributes to normal psychological function” · Mood
Not authorised for mood: the register refused 1 claim there.
Vitamin B12
1 authorised claim · 163 capsules · ingredient page- “Vitamin B12 contributes to normal psychological function” · Mood
Folate
2 authorised claims · 138 capsules · ingredient page- “Folate contributes to normal psychological function” · Mood
- “Folate contributes to maternal tissue growth during pregnancy” · Fertility
Biotin
1 authorised claim · 124 capsules · ingredient page- “Biotin contributes to normal psychological function” · Mood
Selenium
1 authorised claim · 95 capsules · ingredient page- “Selenium contributes to normal spermatogenesis” · Fertility
Niacin
1 authorised claim · 46 capsules · ingredient page- “Niacin contributes to normal psychological function” · Mood
Thiamine
1 authorised claim · 5 capsules · ingredient page- “Thiamine contributes to normal psychological function” · Mood
Assessed by the register and not authorised
The register looked at claims for these relating to testosterone and mood and fertility 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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