Always inform your doctor about all medications you take, including over-the-counter drugs, supplements, and herbal remedies. This includes nitrates, which are commonly used to treat chest pain (angina). Combining Tadalafil with nitrates can cause a dangerous drop in blood pressure.
Certain medications can affect how Tadalafil works or increase the risk of side effects. These include:
- Alpha-blockers: These are often prescribed for high blood pressure or enlarged prostate. Combining them with Tadalafil may cause a significant drop in blood pressure. HIV protease inhibitors: These medications treat HIV infection. Using them concurrently with Tadalafil can increase Tadalafil levels in the blood, potentially leading to heightened side effects. Azole antifungals: Used to treat fungal infections, these drugs can also increase Tadalafil blood levels. Macrolide antibiotics: Some macrolides, like erythromycin, can interact with Tadalafil, potentially affecting its metabolism. Grapefruit juice: Avoid grapefruit juice while taking Tadalafil, as it can interfere with its metabolism and increase its concentration in your blood.
This list isn’t exhaustive; other drugs may also interact. Your doctor can provide a more complete assessment of potential interactions based on your individual health profile and medication history. Always discuss potential drug interactions before starting Tadalafil, or any new medication.
If you experience any unusual side effects while taking Tadalafil, contact your doctor immediately. Open communication with your healthcare provider is paramount for safe and effective medication management.
Be honest and thorough: Provide a complete list of your current medications. Ask questions: Don’t hesitate to clarify any doubts regarding potential drug interactions. Report side effects: Promptly report any unusual symptoms to your doctor.


