Viagra is a medication that relaxes muscle walls in blood vessels and increases blood flow to certain parts of the body. It treats erectile dysfunction. Do not take this medication if you are currently taking Revatio. As with any medication, there could be serious side effects if combined with Viagra, so always consult with a physician before beginning any new medication. Do not take this medication if you take nitrates for heart problems. Contact your doctor if your erection lasts for longer than 4 hours or is painful. Sildenafil is an active ingredient in Viagra, which means this medication should not be taken if you have had an allergic reaction to Sildenafil in the past. Viagra should only be taken by persons over 18 years of age. Viagra is only taken as needed, 30 minutes to one hour before sexual activity, and should only be taken up to once daily. Side effects include heart attack symptoms and vision changes among others. Viagra can be purchased online or at your local pharmacy.

Buy Viagra in South Africa over counter

Men who suffer erectile dysfunction would love to treat this health condition as soon as possible. And the first thing they would try is Viagra, the most well known medication for erectile in today’s market.

A product of the American pharmaceutical giant, Viagra is the brand name of sildenafil, the main chemical component of the drug. Before being used to treat male impotence, sildenafil was first used to treat pulmonary hypertension. But then some patients reported that they could achieve a better and stronger erection after taking sildenafil. Pfizer noticed this new side effect of sildenafil and has done more studies and researches about it. After that, Viagra was created as the first medication for erectile dysfunction. Since then, Viagra has helped millions of men around the world improve their sex lives and has become one of the most lucrative product of Pfizer.

How Viagra can treat erectile dysfunction is related to the PDE5 enzyme. This enzyme is found in the blood vessels near the penis and is known to tighten the blood vessels thus prevent the blood flow into the penis when a man is aroused. As a PDE5 inhibitor, sildenafil blocks this enzyme to allow a higher amount of blood to enter the male sexual organ to create a stronger and firmer erection. This erection under the effects of sildenafil is totally natural as the drug does not cause the erection. A sexual stimulation is still necessary to get an erection. The erection will end and the penis will return to its flaccid mode after the man ejaculates.

Viagra can be seen as a safe drug as the FDA has approved it for treating both pulmonary hypertension and erectile dysfunction. However, there are still some side effects that men who are planning to use Viagra should be aware of. The most important side effect of Viagra that every man should know is a sudden drop of blood pressure. This is actually a direct consequence of how Viagra increases the amount of blood into the penis. Normally, a man of normal health should not be worried about this drop of blood pressure. However, if he has any existing heart problem or is taking any other drug that can also lower the blood pressure, then this could lead to a heart attack or a stroke which can be quite dangerous. So before using Viagra, you need to make sure that you do not have any existing heart problem and are not taking any other drug that can cause low blood pressure. In case you are not sure, you should have your health checked and ask a doctor’s opinion first. Besides the low blood pressure problem, some other less dangerous side effects of Viagra include a mild headache and dizziness, pain in the back and abdominal areas, sometimes a temporary loss of hearing and vision. These side effects usually occur about 15 minutes after taking Viagra and will generally disappear after a few hours.

Viagra is recommended to be taken with a full glass of water about 1 hour before having sex. Alcohol and grape fruit juice should not be taken together with Viagra to get the full effects of the drug and to prevent the potential side effects. Viagra is manufactured as diamond-shaped, blue tablets. It can be purchased at pharmaceutical stores or on the internet without a doctor’s prescription. Viagra should be stored in a cool, dry place and out of reach of children and pets.

Alexander Pretorius

Medical Practitioner (General Practice) with postgraduate diplomas in Cape Town. My special interest is erectile dysfunction.