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It is contraindicated in patients who are taking nitrates (often prescribed for chest pain), as the combination can cause a dangerous drop in blood pressure. Other potential side effects include headaches, flushing, indigestion, nasal congestion, dizziness, and visual disturbances. While Viagra has proven to be highly effective in treating ED, it is not suitable for everyone. In rare cases, Viagra can cause more serious side effects like priapism, a prolonged and sildenafil 100mg price at walgreens painful erection that can cause permanent damage if not treated promptly.

The primary mechanism through which Viagra operates is by inhibiting an enzyme called phosphodiesterase type 5 (PDE5). Normally, PDE5 breaks down cyclic guanosine monophosphate (cGMP), a substance that is responsible for smooth muscle relaxation in the corpus cavernosum of the penis. By inhibiting PDE5, Viagra increases the levels of cGMP, thus enhancing the natural process of erection during sexual stimulation by allowing increased blood flow into the penis. Since its approval by the FDA in 1998, Viagra has become one of the most well-known and frequently prescribed drugs for erectile dysfunction worldwide.

Viagra, scientifically known as sildenafil citrate, was initially developed as a medication for treating high blood pressure and angina, a type of chest pain associated with heart disease. However, during clinical trials, researchers discovered that it had a profound effect on erectile dysfunction (ED), which led to its repositioning as a treatment for this condition. Viagra, scientifically known as sildenafil citrate, is a pharmaceutical drug that has revolutionized the treatment of erectile dysfunction (ED) since its serendipitous discovery in the late 1990s.

Originally developed by scientists at Pfizer as a potential treatment for hypertension and angina, Viagra’s profound impact on erectile function transformed it into the first oral treatment approved by the FDA for erectile dysfunction in 1998. These side effects are generally mild and temporary but can be severe in rare cases. Other side effects may include headaches, flushing, indigestion, nasal congestion, dizziness, and visual disturbances.

The use of Viagra is contraindicated in patients taking nitrates (often prescribed for chest pain), as the combination can cause a dangerous decrease in blood pressure. The primary mechanism through which Viagra operates is by inhibiting an enzyme called phosphodiesterase-5 (PDE5). By blocking PDE5, Viagra essentially increases the availability of cGMP, thereby enhancing the ability to achieve and maintain an erection.

Normally, PDE5 breaks down a substance known as cyclic guanosine monophosphate (cGMP), which is crucial for the relaxation of smooth muscle tissue. cGMP facilitates blood flow, and its increased levels result in better engorgement and function of the penis during sexual arousal. Since its market introduction by Pfizer in 1998, Viagra has become one of the most well-known and frequently prescribed drugs for ED.

Its discovery was somewhat serendipitous; originally developed as a treatment for hypertension and angina pectoris, researchers noted the drug's ability to induce penile erections as a side effect during clinical trials. Viagra, known generically as sildenafil citrate, is a medication primarily used to treat erectile dysfunction (ED) in men. More serious but rare side effects can include priapism (a painful erection lasting longer than four hours), sudden hearing loss, or vision loss.