Viagra online in south Africa

Viagra is one of the pharmaceutical drugs to have hit the market in the last 30 years. It is most commonly used to treat erectile dysfunction.
Viagra works by relaxing the muscles in the walls of blood vessels in certain areas of the body. In most cases, Viagra works well and has changed people’s lives for the better. Viagra was initially designed to treat hypertension and angina pectoris. Viagra pills are blue and diamond-shaped.
Individuals with kidney disease should not take Viagra. Some people use Viagra recreationally, although it is not thought to have any benefit for people without penile dysfunction. Viagra was initially designed to help lower blood pressure but is now typically used to treat erectile dysfunction.

Cheap Viagra online in south Africa

Viagra is the brand name for sildenafil citrate and is used to treat erectile dysfunction and pulmonary arterial hypertension. Originally developed by scientists in the United Kingdom, it was brought onto the market by Pfizer Inc., an American pharmaceutical company. Viagra is also sold under brand name Revatio. the advantages of viagra is it can help men who cannot achieve or sustain an erection due to erectile dysfunction. It improves the erectile response when a man is already sexually stimulated, but it does not provide sexual stimulation. If there is no sexual stimulation, viagra will not work.

When sexual stimulation occurs, nitric oxide is released by the nervous system in the erectile tissue of the penis. Nitric oxide stimulates an enzyme that produces messenger cyclic guanosine monophosphate (cGMP). The cGMP causes the arteries in the penis to dilate, so that the arteries and the erectile tissue fill with blood. An erection results. Viagra prevents cGMP from becoming degraded, so the blood flow and the erection can continue. the side effects of viagara can be headaches,nasal congestion,impaired vision,photophobia,indigestion,cyanopsia, Use of viagra can also lead to nonarteritic anterior ischemic optic neuropathy, or damage to the optic nerve.Other side effects can be , priapism, a painful, long-lasting erection,heart attack,sudden hearing loss,increased intraocular pressure,ventricular arrhythmias, etc.

Viagra can decrease blood supply to the optic nerve, causing sudden vision loss. This very rare adverse event occurs mainly in people with heart disease, hypertension, diabetes, high cholesterol, or pre-existing eye problems. People with HIV who take protease inhibitors should discuss using Viagra with their doctors, because protease inhibitors increase the likelihood and severity of side effects. Experts say that these individuals should have no more than 25 milligrams (mg), and not more often than every 48 hours.If the individual is taking alpha-blockers, they should make sure they take Viagra at least 4 hours before or after to prevent dangerously low blood pressure. The following individuals should not take Viagra, or should check with their doctor first, viz., those on nitric oxide donors, nitrates, and organic nitrites,men who are advised to refrain from sexual intercourse because of cardiovascular risk factors,people with severe liver impairment,people with kidney disease,individuals with low blood pressure (hypotension),those who have had a recent heart attack or stroke,individuals with hereditary degenerative retinal disorders,Some athletes take Revatio to increase their exercise capacity, but there is little evidence to support this use. Viagra may reduce blood clots after stent surgery and may reduce blood clots after stent surgery
New research shows that a popular drug for erectile dysfunction may reduce the risk of blood clotting after stent implantation.Overdose of can be serious, although death is rare.The dosage will be different if the drug is taken for erectile dysfunction or for pulmonary arterial hypertension.

For erectile dysfunction, Viagra comes in blue, diamond-shaped pills, in doses of 25, 50, or 100 mg.The individual should take a maximum of one pill in a 24-hour period, 30 minutes to 1 hour before sexual intercourse. For pulmonary arterial hypertension, Viagra comes in white, round, film-coated tablets. People take one 20-mg Revatio tablet three times a day. Symptoms of overdose of Viagra , can be vomiting,blurred vision and distorted vision, papilledema – swelling in the optic nerve,optic neuropathy – damage to the optic nerve, tachycardia (increased heart rate),prolonged priapism,blindness, rhabdomyolysis – break down of muscles,diarrhea.

During the phase 1 trials, it was noted that the drug did very little to prevent angina but did induce marked penile erections. Hitting the market in 1998, Viagra was the first oral treatment approved to treat erectile dysfunction in the U.S.
Viagra use in individuals without erectile dysfunction does not seem to have any effect. Although, researchers have noted that there is a significant placebo effect. On a similar note, there is no proven benefit for women taking the drug.

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