Both Revatio (sildenafil) and Viagra (sildenafil) share similar side effects due to their identical active ingredient. However, dosage differences can influence their frequency and intensity.
Common side effects for both include headache, flushing, nasal congestion, and visual disturbances (blurred vision, changes in color perception). These are typically mild and transient.
More serious, though rare, side effects include:
| Prolonged erection (priapism) | Less likely | More likely |
| Sudden vision loss | Rare | Rare, but potentially more prevalent with higher doses |
| Hearing loss | Rare | Rare |
| Heart problems (e. g., chest pain, irregular heartbeat) | Less frequent | Potentially more frequent due to higher dose |
The risk of serious side effects increases with pre-existing conditions like heart disease or high blood pressure. Consult your doctor before using either medication, especially if you have any underlying health concerns. They can help determine which medication, and what dosage, is right for you, minimizing potential risks. Always report any concerning side effects immediately to your physician.
