BTN Forte: price, uses & cheaper substitutes

Only if your hair loss is caused by biotin deficiency, which is rare. There is not good evidence that biotin grows hair in people with normal biotin levels. A dermatologist can find the real cause of hair fall.

Biotin usually causes no side effects, and no toxic symptoms are known. The main risk is that high-dose biotin can interfere with certain lab tests, such as making a heart attack (troponin) test read falsely low.

Tell your doctor and the lab that you take biotin before any blood test, because it can interfere with certain tests. In an emergency, always mention it.

Only if a doctor advises it. Adults need about 30 micrograms a day; the NHS considers 0.9 mg or less a day from supplements unlikely to cause harm, and there is not enough evidence about higher daily doses.