Notably, it is prescribed for pulmonary arterial hypertension (PAH) under the brand name Revatio. In this context, Viagra helps relax blood vessels in the lungs, lisinopril 40mg improving blood flow and reducing the workload on the heart. Viagra is also used to treat other medical conditions. Viagra works by inhibiting an enzyme known as phosphodiesterase type 5 (PDE5), which is responsible for the breakdown of cGMP in the corpus cavernosum. By blocking PDE5, Viagra enhances the effects of NO by prolonging the duration and effect of cGMP, thus improving the ability to achieve and maintain an erection in the presence of sexual stimulation.

In conclusion, Viagra has played a pivotal role in the management of erectile dysfunction and has opened new avenues for the treatment of other medical conditions. Its discovery has significantly impacted medical science, highlighting the importance of understanding and manipulating physiological pathways for therapeutic purposes. Societally and culturally, Viagra has had significant impacts since its introduction. It has helped break down the stigma associated with ED, bringing more openness to discussions about sexual health among men.

However, it has also faced criticism and concern over recreational use, especially among younger populations who may not have ED. Viagra, known scientifically as sildenafil citrate, is a medication widely recognized for its role in treating erectile dysfunction (ED). Developed and marketed by Pfizer, Viagra was initially intended as a treatment for hypertension and angina pectoris. However, during clinical trials, it was found to have a profound effect on erectile function, which led to its approval by the FDA in 1998 for the treatment of ED.

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, was initially developed as a medication for treating high blood pressure and angina, a type of chest pain associated with heart disease. 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.

However, it does not cause erections without sexual stimulation and is not an aphrodisiac or a hormone. It is generally taken in a dosage of 25 to 100 mg, about one hour before sexual activity, and its effects can last up to four hours. The effectiveness of Viagra in treating ED is well-documented, with numerous studies indicating that it helps achieve and maintain an erection in approximately 70% of users. Despite its widespread use, Viagra is not suitable for everyone.

These side effects are generally mild to moderate and temporary, but it's crucial for potential users to consult healthcare providers to ensure Viagra is a safe option for them. Other potential side effects include headaches, flushing, indigestion, nasal congestion, dizziness, and visual disturbances. It is contraindicated in individuals using nitrate drugs for chest pain or heart problems, as the combination can cause a dangerous drop in blood pressure.

More serious but rare side effects include priapism, a condition where an erection lasts longer than four hours and can cause permanent damage to the penis.