Viagra, or sildenafil, works by inhibiting an enzyme called phosphodiesterase-5 (PDE5). This enzyme normally breaks down cyclic GMP, a molecule that relaxes blood vessels in the penis. By blocking PDE5, Viagra increases cyclic GMP levels, leading to improved blood flow and facilitating an erection.
Dosage and Individual Variation
The recommended starting dose of Viagra is 50 mg. However, your doctor may adjust this based on your individual response and overall health. Factors such as age, liver and kidney function, and other medications you’re taking influence how your body processes Viagra. Never exceed the maximum recommended dose of 100 mg within a 24-hour period. Taking more than prescribed won’t enhance the effects and can increase the risk of side effects.
Potential Side Effects and Precautions
Common side effects include headache, flushing, nasal congestion, and visual disturbances. More serious, though rare, side effects include sudden vision loss or hearing loss. Individuals with certain heart conditions, low blood pressure, or a history of stroke should discuss Viagra use with their doctor before taking it. Grapefruit juice can interact with Viagra, potentially increasing its concentration in the blood, so avoid it.
Seeking Professional Guidance
Always consult your physician before starting Viagra. They can assess your medical history, discuss potential risks and benefits, and determine the appropriate dosage for you. Open communication with your doctor is key to safe and effective use.
