Biotin products

Biotin is needed for normal keratin production, and a deficiency can show up as thinning hair or brittle nails. True deficiency is uncommon, though, and evidence that extra biotin helps people with normal levels is limited. It may support hair, skin and nails as part of good nutrition; results vary.

It is far above the adult daily need of about 30 mcg. Because biotin is water-soluble, excess is usually excreted, but more isn't necessarily better. Check whether your multivitamin or collagen already contains biotin, and ask the pharmacist to avoid doubling up.

Yes. High-dose biotin can interfere with some blood tests, including thyroid and cardiac (troponin) tests, giving inaccurate results. Tell your doctor and the lab you take it and ask whether to pause before testing. Pregnant or breastfeeding women and people on anti-seizure medicines should check with a doctor first.

Plain biotin is the budget choice if that's all you want. A B-complex covers the whole B family and suits people focused on energy and nerves in general. Collagen blends with biotin and vitamin C, like NeoCell, cost more and appeal to those also targeting skin. Ask the pharmacist if unsure.

Hair and nails grow slowly, so any change usually takes a few months of consistent use alongside good diet and sleep. You can order online with cash on delivery, and delivery takes 12 to 72 hours depending on your area.