An Important Note on This Dose Before You Start
This product delivers 12,000mcg of D-biotin per tablet, notably higher than the 2,500-10,000mcg range most hair and nail research is actually based on, as covered in our complete biotin guide. It’s worth being clear that a higher dose isn’t established as more effective than a standard dose — biotin supplementation helps most reliably where a genuine deficiency exists, and true biotin deficiency is uncommon in people eating a varied diet, regardless of dose taken.
Given this dose specifically, one safety point matters more than usual: high-dose biotin can interfere with certain thyroid and cardiac blood test results, causing falsely abnormal readings. If you take this supplement regularly and have blood tests coming up, tell your GP or the laboratory beforehand — this is a genuine, documented interaction, not a minor footnote, and becomes more relevant the higher the dose you’re taking.
Biotin has an established, EU-authorised role in the maintenance of normal hair and skin. D-biotin is the naturally occurring, bioactive form recognised by the body. This formula is free from magnesium stearate and unnecessary fillers, third-party tested, and fully vegan.
Biotin is generally well tolerated, with mild digestive changes possible when starting — taking it with food can help. Speak to your GP before starting if you take regular medication or have an existing health condition, and particularly if you have any thyroid-related blood tests scheduled while taking this product. Manufactured by WeightWorld, a British family business operating since 2006. Take one tablet daily; 365 tablets provide a full year’s supply.
The Research Behind This Product
Skin, Hair & Nail Health
Biotin Supplements: What the Evidence Actually Shows for Hair & Nails
What biotin genuinely does for hair, skin and nails — the real EU-authorised claim behind it, and the one important blood-test interaction worth knowing.
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