Viagra, or sildenafil citrate, primarily treats erectile dysfunction (ED), a condition affecting a man’s ability to achieve or maintain an erection firm enough for satisfactory sexual intercourse. It works by increasing blood flow to the penis, facilitating an erection in response to sexual stimulation. This isn’t a spontaneous erection; sexual stimulation remains necessary.
How Viagra Works
Viagra inhibits an enzyme called phosphodiesterase-5 (PDE5). This enzyme breaks down cGMP, a molecule crucial for penile blood vessel dilation. By blocking PDE5, Viagra allows cGMP levels to remain high, resulting in increased blood flow. The effect typically lasts for 4-5 hours.
Beyond ED: Pulmonary Hypertension
Other Uses
Beyond ED, Viagra is FDA-approved to treat pulmonary arterial hypertension (PAH), a condition causing high blood pressure in the arteries leading to the lungs. It improves blood flow in the lungs, easing symptoms. Always consult a doctor before using Viagra for any condition. Dosage varies depending on the condition and individual needs. A doctor determines the appropriate dose and treatment duration.
Important Note: Viagra interacts with certain medications, including nitrates. Combining them can cause a dangerous drop in blood pressure. Inform your doctor about all medications you’re taking before starting Viagra. Side effects can include headaches, facial flushing, and indigestion. Rarely, more serious side effects can occur. Seek immediate medical attention if you experience sudden vision loss or chest pain.
