Viagra, or sildenafil citrate, primarily treats erectile dysfunction (ED). It works by increasing blood flow to the penis, enabling a firmer erection suitable for sexual activity. This improved blood flow is facilitated by inhibiting an enzyme called phosphodiesterase-5 (PDE5).
How Viagra Works
The medication helps men achieve and maintain an erection only when sexually stimulated. It doesn’t spontaneously cause erections. The effect typically lasts for four to five hours. Dosage varies; your doctor will determine the appropriate amount based on your health and medical history. Consult your physician before use.
Beyond Erectile Dysfunction
Important Note: While primarily used for ED, Viagra also finds application in treating pulmonary arterial hypertension (PAH), a condition involving high blood pressure in the arteries leading to the lungs. This use requires a different dosage and careful medical supervision.
Considerations and Precautions
Potential side effects include headaches, facial flushing, nasal congestion, and visual disturbances. Viagra interacts with certain medications, including nitrates. Men with heart conditions, low blood pressure, or a history of stroke should discuss Viagra use with their doctor. Always follow your doctor’s instructions regarding dosage and frequency.
