Always discuss Viagra (sildenafil) with your doctor before use. He or she can assess your health and advise on potential risks.
Common side effects include headache, flushing, nasal congestion, and upset stomach. These are usually mild and temporary. However, more serious, though rare, side effects exist. Seek immediate medical attention if you experience chest pain, irregular heartbeat, sudden vision loss, or prolonged erection (priapism).
Certain medications interact with Viagra. The following table highlights some key interactions:
| Nitrates (e. g., nitroglycerin) | Dangerous drop in blood pressure | Do not use Viagra with nitrates. |
| Alpha-blockers (e. g., doxazosin) | Increased risk of low blood pressure | Your doctor may adjust your dosage. |
| Certain antifungals (e. g., ketoconazole) | Increased Viagra levels in the blood | Your doctor may lower your Viagra dosage. |
| HIV protease inhibitors (e. g., ritonavir) | Increased Viagra levels in the blood | Your doctor may lower your Viagra dosage. |
Grapefruit juice can also affect Viagra metabolism. Avoid consuming it while taking the medication. This information is not exhaustive; consult your physician or pharmacist for a complete list of potential interactions and further guidance. Regular checkups with your doctor will help manage any possible complications.
