Viagra, or sildenafil citrate, treats erectile dysfunction (ED) by increasing blood flow to the penis. This allows for firmer, easier erections during sexual stimulation. It’s important to note that Viagra doesn’t create arousal; it simply helps men achieve and maintain an erection.
How Viagra Works
Viagra works by inhibiting an enzyme called phosphodiesterase-5 (PDE5). This enzyme normally breaks down cGMP, a substance that relaxes blood vessels. By blocking PDE5, Viagra allows cGMP levels to rise, leading to vasodilation and increased blood flow to the penis.
Who Should Use Viagra?
Viagra is prescribed for adult men diagnosed with ED. Your doctor will assess your overall health and determine if Viagra is appropriate. Men with certain heart conditions, uncontrolled blood pressure, or those taking specific medications should discuss their suitability with their physician before use.
Potential Side Effects
Common side effects include headache, flushing, nasal congestion, and visual disturbances. Rarely, more serious side effects can occur. Always inform your doctor about any side effects you experience.
| Headache | Common |
| Facial flushing | Common |
| Nasal congestion | Common |
| Visual disturbances | Less common |
| Serious cardiovascular events | Rare |
Dosage and Administration
Your doctor will determine the appropriate dosage. Typically, Viagra is taken orally as needed, about an hour before sexual activity. Never exceed the recommended dose.
Alternatives to Viagra
Other medications are available to treat ED. Discuss alternative options with your doctor if Viagra is not suitable or ineffective.
