Viagra, or sildenafil, works by inhibiting an enzyme called phosphodiesterase-5 (PDE5).
This enzyme typically breaks down cyclic GMP, a molecule crucial for smooth muscle relaxation in the penis. By blocking PDE5, Viagra allows cyclic GMP levels to rise.
- Increased cyclic GMP causes relaxation of the smooth muscles in the blood vessels of the penis. This increased blood flow leads to an erection in response to sexual stimulation.
It’s important to understand Viagra only facilitates an erection; sexual stimulation is still required.
The drug’s effects usually begin within 30-60 minutes and can last for up to four hours. However, individual responses vary.
Dosage: The prescribed dose should be carefully followed. Your doctor will determine the appropriate amount based on your health and medical history. Timing: Take the medication as directed, usually about an hour before sexual activity. Food & Drink: While food doesn’t significantly affect Viagra’s absorption, grapefruit juice should be avoided as it can increase blood levels of the drug. Alcohol: Excessive alcohol consumption can interfere with the drug’s effectiveness and may increase the risk of side effects.
Side effects, though generally mild, can include headaches, flushing, nasal congestion, and visual disturbances. Consult your doctor if you experience any concerning side effects.
Always discuss Viagra use with your physician to ensure it’s safe and appropriate for you, considering any pre-existing health conditions and medications you are taking.
