characteristics: light yellow powder-like crystal which is easy to dissolve into water, alcohol and fat, free of any special smell. function: when there is sexual stimulation, non-epinephrine in corpus cavernosum penis (nanc), nitrogen monoside enzyme in nerve cell and endothelial cell can catalyze the composition of nitrogen monoside from l-arginine. nitrogen monoside can increase the composition of guanylic which will lead to the laxity of smooth muscle in corpus cavernosum penis and penis arteriole. when the blood infuse into corpus cavernosum penis, there will be erection for penis. therefore, this product belongs to type-Ⅴphosphodiesterase inhibitor. pharmacokinetics: it is quick to absorb when taking orally and can reach the peaking value within 1-2h, t1/2 is 8-12h. take this medicine once a day, the drug effect can continue for 36-48h. there is no obvious accumulation and the consistence of blood will be in straight line dependence with the dosage you take. and there is no obvious influence for the blood pressure and heart rate of the one who takes it once a day. adaptive disease: sexual function decay of male, sexual disorder and ed dosage & usage: once a day, 100-120mg/time untoward reaction: red face tabu: 1. high blood pressure suffer whose blood pressure is hard to control and can’t be controlled 2. the one who suffers from serious coronary heart disease and heart failure 3. the one who suffers from serious live and kidney disease reaction of medicine: this product can’t be taken together with nitrate and the medicine which can offer no. it will take about 10 days for you to take them separately. storage: sealed valid period: 2-3 years specification: 1kg/20kg/50kg can be offered according to client’s requirement.