Treatment For Erectile Dysfunction (ED) and Impotence With Viagra
Viagra is used in the treatment of erectile dysfunction (ED) and associated impotence. When a man is sexually aroused, his penis gets erected, because of more blood entering into the penis, and less blood going out. This is brought about by an enzyme called cGMP. cGMP dilates the blood vessels and the smooth muscles of the penis and more blood enters in causing engorgement of the tissue. Same way, because of the pressure by the engorged tissue, veins canít take the blood out. And thus erection occurs. There is another enzyme known as PDE5 which breaks down cGMP. In that case, dilation of blood vessels and smooth muscles of penis get hampered and extra blood supply is inhibited, thus erection does not occur. Viagra contains a drug called sildenafil citrate, which inhibits the PDE5 enzyme and lets the cGMP work smoothly, thus improving erectile dysfunction (ED). Being it a prescription only drug, you should not buy Viagra without a prescription.
The usual dose for most men is 50 mg, which can be increased to 100 mg as per their tolerance. If you are more than 65 years of age and are having heart, kidney or prostate problems, your doctor may start you the lowest dose of 25 mg. Viagra is to be taken only once daily.
After you buy Viagra against your doctos prescription, start taking it half to one hour before sex. You should remember that it does not act instantly, and needs sexual arousal. It acts for four hours, so you need not hurry or be impatient. For some men, it may show result in a period as little as 14 minutes. It works best on empty stomach. But if you need to eat, have a meal with less or no fatty substances, like oil or butter. This is because fats hamper the absorption of the drug.
Remember that this medicine helps in getting an erection, achieving harder erection and prolong the erection, but it does not cure erectile dysfunction, doesnít prevent sexually transmitted diseases, or does not act as a male contraceptive. You should talk with your doctor thoroughly about your problems, diseases, past and present medications etc. before you buy Viagra.
There is a high risk of cardiac problem in having sex for the patients with already existing heart disease. Therefore men with such problem should not to engage in sexual activity. Talk to your doctor about all your existing diseases before you buy Viagra.
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