Viagra, containing sildenafil, helps treat erectile dysfunction (ED) by increasing blood flow to the penis. This allows for firmer, easier-to-achieve erections.
How Viagra Works
Sildenafil inhibits an enzyme called phosphodiesterase-5 (PDE5). PDE5 breakdown of cGMP, a substance crucial for penile erection, is blocked. Higher cGMP levels lead to relaxed blood vessels and increased blood flow.
Potential Side Effects
Common side effects include headache, flushing, nasal congestion, and visual disturbances. Less frequent but more serious side effects include heart problems and hearing loss. Consult your doctor immediately if you experience any unusual symptoms.
Dosage and Administration
The typical starting dose is 50 mg, taken as needed, approximately one hour before sexual activity. Your doctor will adjust the dosage based on your response and health status. Do not exceed the recommended dose.
Interactions with other Medications
Viagra can interact negatively with nitrates (used to treat angina) and some other medications. Always inform your doctor about all medications you are taking before starting Viagra.
Who Should Not Take Viagra?
Individuals with severe heart problems, low blood pressure, certain eye conditions, or a history of stroke should avoid Viagra. Pregnant or breastfeeding women should also avoid this medication. Your doctor can perform a risk assessment to determine your suitability for Viagra.
