Revatio, like all medications, can cause side effects. Common side effects include headache, flushing, and nasal congestion. Less common, but still possible, are dizziness, nausea, and visual disturbances. Serious side effects are rare, but you should seek immediate medical attention if you experience chest pain, sudden vision loss, or prolonged erection (priapism).
Drug Interactions
Revatio interacts with certain medications. It’s crucial to inform your doctor about all medications you’re taking, including over-the-counter drugs, herbal remedies, and supplements. Specific interactions include nitrates (used to treat chest pain) and alpha-blockers (used to treat high blood pressure and prostate problems). Combining Revatio with these can significantly lower blood pressure, potentially causing dangerous side effects. Additionally, strong CYP3A4 inhibitors (like ketoconazole and ritonavir) can increase Revatio levels in your blood, potentially leading to increased side effects. Conversely, strong CYP3A4 inducers (like rifampin and St. John’s Wort) can decrease Revatio’s effectiveness.
Before Taking Revatio
Discuss your medical history, including any heart conditions, liver problems, or low blood pressure, with your doctor before starting Revatio. This will help ensure your safety and treatment efficacy.


