Viagra (sildenafil) is by far the most popular erectile dysfunction treatment drug that proved efficient for an overwhelming majority of males in the world. This drug is intended for men who for any reasons are unable to achieve and maintain an erection for long enough to have sex. Viagra increases the blood flow to the penis which results in a normal erection once some sexual stimulation occurs. Take this medicine exactly as directed by your doctor; do not take a double dose as it will not increase the drug's efficiency and may result in serious health consequences. 24 hours should be allowed to pass between two doses of Viagra. This medicine should be taken 30-60 minutes before having sexual intercourse.
Viagra is FDA pregnancy category B, which means it is not expected to cause harm to an unborn baby. It is not known for sure whether this medicine passes into breast milk - so if you are pregnant, breastfeeding, or planning to do so it's recommended to inform your doctor. If you experience an allergic reaction to Viagra (symptoms such as trouble breathing, hives, swelling of the lips, tongue, throat and face, rash), or become dizzy and nauseated during sexual intercourse call an ambulance.