| Viagra oral therapy is one of the most efficient treatments of impotence in men. The medication was initially introduced to treat heart diseases and prevent heart attacks. Later on it was found out that the pills could widen blood arteries.
Impotence, known as erectile dysfunction) is a medical condition when the penis does not harden and engorge when a male is sexually excited, or when he cannot maintain an erection. Viagra may help a man with ED attain and maintain an erection when he is sexually excited. Viagra is intended for males only and must be used if prescribed by a general practitioner.
An erection is the result of an increase in blood flow into the genitalia and in particular to the penis. Viagra relaxes the blood vessels of the penis during sexual stimulation, so blood flow to the organ soars.
When taken orally before a meal, maximum medication concentration in blood is reported within 30 to 120 minutes after administration.
Viagra can efficient up to 4 hours, but the response after 4 hours is less than it is after 2 hours after administration. When taken with products rich in fat, the potency of the medication decreases.
Like other prescription medications, Viagra can cause adverse side effects in some men. The commonest adverse side effects are bad headaches, dizziness, stomachache, redness in face, neck and/or chest and visual problems.
The medication is contraindicated in males with cardiac problems, forcible deformities of the penis, in men predisposed to elongated erections brought on by sickle cell disease, plasma cell myeloma (a form of cancer), leukaemia, liver problems (especially serious liver disorders), kidney problems and in men taking certain medications used for HIV or those over 65. There have been examples when men taking the medication died during sex.
When taken with other drugs (nitrate or nitroglycerin heart medications), Viagra can bring on dangerous decrease in blood pressure, which can be life-threatening. Therefore, before taking the medication, ask your doctor about potential drug-to-drug interactions. |