Viagra, or sildenafil, enhances erections by increasing blood flow to the penis. This happens because it inhibits an enzyme called phosphodiesterase-5 (PDE5), allowing nitric oxide to work more effectively. Nitric oxide relaxes blood vessel muscles, leading to increased blood flow.
How to Take Viagra and What to Expect
Take Viagra approximately one hour before sexual activity. Dosage varies, typically 50mg, but your doctor will determine the appropriate amount based on your health and needs. Expect to experience an increased ability to achieve and maintain an erection in response to sexual stimulation. The effects last for around four hours. Note that Viagra doesn’t create desire; it helps men experiencing erectile dysfunction respond to arousal.
Potential Side Effects
Common side effects include headaches, flushing, nasal congestion, and upset stomach. These are usually mild and temporary. More serious, though rare, side effects include vision changes, hearing loss, and prolonged erection (priapism). Seek immediate medical attention if you experience any of these. Always consult your doctor before taking Viagra, especially if you have heart problems, high blood pressure, or take other medications.
