Always inform your doctor about all medications you are taking, including over-the-counter drugs, herbal supplements, and recreational drugs, before starting Viagra. This includes nitrates (found in some heart medications), alpha-blockers (used to treat high blood pressure and enlarged prostate), and certain antifungals.
Nitrates and Viagra
Combining Viagra with nitrates can cause a dangerous drop in blood pressure, potentially leading to serious complications. This combination is strictly contraindicated.
Alpha-Blockers and Viagra
- Taking Viagra with alpha-blockers may increase the risk of low blood pressure, particularly when starting or changing the dose of either medication. Your doctor may need to adjust your dosages or monitor your blood pressure carefully.
Antifungal Medications (like ketoconazole and itraconazole) and Viagra
These medications can increase Viagra’s concentration in your bloodstream, potentially intensifying its effects and side effects. Your doctor might adjust your Viagra dosage accordingly.
Other Potential Interactions
Protease inhibitors (used to treat HIV): May increase Viagra’s levels in the blood. CYP3A4 inhibitors (certain antibiotics and antifungals): Can affect Viagra metabolism. CYP3A4 inducers (certain anticonvulsants and St. John’s Wort): May decrease Viagra’s effectiveness.
This information is not exhaustive. Consult your doctor or pharmacist for a complete list of potential drug interactions and personalized advice. They can help assess the risks and benefits of taking Viagra alongside your other medications.
Important Note:
Never change your medication dosage without consulting your doctor. Misuse of Viagra can be dangerous. Always follow your doctor’s instructions.
