Kushta Qalai is a Unani herbo-mineral prepared from calx of tin. Kushta can be defined as the calcined product of any metal or mineral and Qalai is tin. So kushta qalai is calcined tin. Qurs Kushta Qalai is useful in treatment of sparmatorrhoea, premature ejaculation, impotency, infertility, weakness of nerves and debility. It improves male fertility. It thickens the seman and cures nocturnal emission.