Sidenafil citrate 
CAS:171599-83-0
Product Description
Character:sildenafil citrate, sildenafil, viagra; cure ED(Erectile Dysfunction);
150-180mg/day
Property:white to off-white crystalline powder, odorless, bitter taste,
insoluble in water and ethanol.
Function:sildenafil is a drug used to treat erection difficulties,
such as erectile dysfunction (ED). Since it first became available in 1998,
the prescription drug Sildenafil has helped about 16 million men around the
world improve their sex lives. It is a prescription drug that works by
increasing blood flow to the penis. It is not a hormone or an aphrodisiac.
Dosage: 150 - 180mg/day.z
Specification:1kg/20kg/100kg are available