About Viagra
Viagra® is Pfizer’s brand name for sildenafil citrate, which is chemically a selective inhibitor of Cyclic Guanosine Monophosphate – specific PDE5. Since it launch in 1998, Viagra has helped about 16 million men around the world improve their sex lives. Amazingly, 9 tablets are dispensed every second worldwide. It’s no wonder more than 600,000 Doctors have chosen the prescription drug Viagra for their patients with ED.
One must however remember that Viagra is not for every one. If you use nitrate drugs, often used to control chest pain (also known as angina), don’t take Viagra. This combination could cause your blood pressure to drop to an unsafe or life-threatening level. Be sure to ask your Doctor if your heart is healthy enough for sexual activity.