Avialability: Men suffering from low immunity, waist sour anf knee soft, praecox ejaculation, impotence, short penis, dizziness, tinnitus, weak constitution, night sweating, frequent urinary, urinary urgency, micturition pain, and prostate disease.
Usage and dosage: take orally with warm water, one capsule only before bedtime(with special efect 15-20 miniters before sexual intercourse by taking one capsule).  Precautions:1. In case of frequent erection or keeping erection without ejaculation occured after taking. It can avoid by drinking some cold water.2. It is not allowed take repeatedly within 24 hours.