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Take the time to learn about the potential benefits, the health risks and the many unknowns regarding generic viagra. It can be frightening to read a list of the side effects of Sildenafil citrate. More than a few of my patients have immediately assumed that they would suffer from all of them. The truth is that most people will experience none of them, just the benefits of Sildenafil citrate. Side effects vary from person to person and it is impossible to predict exactly how each individual will be affected. Some characteristics and pre-existing conditions are known to increase the risk from certain side effects. Doctors should assess these factors before advising patients on which drugs to choose. The FDA monitors reports of adverse drug reactions and has found no difference in the rates between generic and brand name drugs.

Sildenafil citrate under the name Viagra is used to treat erectile dysfunction (impotence) in men. For best results use Sildenafil citrate approximately 1 hour before sexual activity, though for some people as little as half hour or as much as 4 hours are needed for Sildenafil citrate to function properly. Sildenafil citrate is effective in about 70% of men who have poor blood circulation as the cause of the ED.

Viagra drug information

It belongs to a family of medications known as PDE5 inhibitors. It selectively inhibits the action of cyclic guanosine monophosphate (cGMP) specific phosphodiesterase type 5, which is responsible for the degradation of cGMP in the chambers of the penis known as corpus cavernosum. When sexual stimulation takes place, an increase in levels of cGMP leads to a relaxation of the smooth muscles which improves the blood flow to the penis.

Sildenafil citrate dosage

Generic Viagra is available in dosage strengths of 25mg, 50mg and 100mg and the pill is blue in colour. This is why it is commonly referred to as the "blue pill". It's an oral medication and should be taken with a glass of water, an hour before sexual activity. The effects of sildenafil citrate last for around 4 hours but, remember that it does not work without sexual stimulation. Typically, doctors recommend a dosage of 50mg of sildenafil, but a 25mg dosage is prescribed to men who are older than 65 years of age. A low dosage is also prescribed to men who suffer from kidney or liver problems. Do not take sildenafil more than once a day. Allow 24 hours to pass between doses.

Sildenafil side effects

The most common side effects of sildenafil: are headache, flushing of the face, upset stomach. Less common side effects that may occur are temporary changes in color vision (such as trouble telling the difference between blue and green objects or having a blue color tinge to them), eyes being more sensitive to light, or blurred vision. Sildenafil can decrease blood flow to the optic nerve of the eye, causing sudden vision loss. This has occurred in a small number of people taking sildenafil, most of whom also had heart disease, diabetes, high blood pressure, high cholesterol, or certain pre-existing eye problems, and in those who smoke or are over 50 years old.