
ildenafil citrate is a medication commonly used to treat erectile dysfunction (ED) in men. It works by increasing blood flow to the penis, helping men achieve and maintain an erection when sexually aroused. Sildenafil is also used to treat pulmonary arterial hypertension (PAH), a condition characterized by high blood pressure in the lungs, under the brand name Revatio.
The drug works as a phosphodiesterase type 5 (PDE5) inhibitor. PDE5 is an enzyme that can limit blood flow to the penis. By inhibiting this enzyme, sildenafil helps to relax the muscles and blood vessels in the penis, enhancing blood flow, which results in an erection.
Sildenafil is typically taken orally in the form of a tablet, and its effects usually last for several hours. It is available in various doses and should be used under medical supervision to ensure safety and effectiveness, particularly since it can interact with other medications or medical conditions.
Common side effects include headaches, flushing, indigestion, and nasal congestion. It's important not to take sildenafil with certain medications, especially nitrates, as the combination can cause a dangerous drop in blood pressure.
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