I have just started taking terbinafine (250 mg a day for 2 weeks). i have read different information about the half-life of the product and that it even stays in your body working a long time (even after the half-life time period). how long does it take f

Terbinafine halflife: Thank you for your question. When used for short-term use (2 weeks), Terbinafine's half-life is defined as 36 hours, therefore it exits the bloodstream after 72 hours. When used for 90 days for nail infection, Terbinafine may be present in the nail plate for much longer, but not the bloodstream. Varying underlying conditions may alter this and assessment by a medical professional is helpful.