Before using Viagra, understand potential side effects. Common ones include headaches, flushing, nasal congestion, and upset stomach. Less common, but still possible, are vision changes (blurred vision, sensitivity to light), dizziness, and back pain. Rarely, more serious side effects such as prolonged erection (priapism), heart attack, or stroke can occur. Seek immediate medical help for any prolonged or painful erection.
Medication Interactions
Viagra interacts with certain medications. Mixing it with nitrates (used to treat chest pain) can cause a dangerous drop in blood pressure. This combination is extremely risky and must be avoided. Also, be cautious when combining Viagra with alpha-blockers (for high blood pressure or prostate problems), as this can lead to low blood pressure. Consult your doctor about all medications you take before starting Viagra.
Specific Interactions and Severity
| Nitrates (e. g., nitroglycerin) | Significant drop in blood pressure | Severe; avoid combination |
| Alpha-blockers (e. g., terazosin) | Low blood pressure | Moderate; requires careful monitoring |
| CYP3A4 inhibitors (e. g., ketoconazole) | Increased Viagra levels | Moderate; dosage adjustment may be needed |
| CYP3A4 inducers (e. g., rifampin) | Decreased Viagra levels | Moderate; may reduce effectiveness |
Further Considerations
This information isn’t exhaustive. Always discuss potential side effects and drug interactions with a healthcare professional before taking Viagra. They can assess your individual risk and provide personalized advice. Remember, this information is for educational purposes only and does not substitute professional medical advice.
