Never take Viagra (sildenafil) more than once a day, regardless of other medications. Combining Viagra with nitrates, found in some heart medications, can cause a dangerous drop in blood pressure. This interaction can lead to serious complications, including stroke or heart attack. Consult your doctor before taking Viagra if you use nitroglycerin, isosorbide mononitrate, or isosorbide dinitrate. Similarly, avoid Viagra with alpha-blockers, commonly prescribed for high blood pressure or enlarged prostate. The combined effect can significantly lower blood pressure.
Other Potential Interactions
Viagra can interact with other medications, including antifungals like ketoconazole and itraconazole, and protease inhibitors used for HIV treatment. These interactions can increase Viagra’s concentration in your blood, potentially leading to side effects. Your doctor should carefully manage your medications if you are on any of these. Certain antibiotics, such as erythromycin and clarithromycin, can also amplify Viagra’s effects.
People with certain health conditions should exercise caution. Pre-existing heart conditions, liver or kidney disease, blood disorders, a history of stroke, or retinitis pigmentosa increase the risk of adverse events. Openly discuss all your health conditions with your doctor before starting Viagra.
Specific Recommendations
Always inform your physician about all medications, supplements, and herbal remedies you take. This includes prescription drugs, over-the-counter medications, and even seemingly harmless supplements. Your doctor can assess potential drug interactions and determine if Viagra is safe for you. If you experience any unusual side effects, such as chest pain, vision changes, or prolonged erection, seek immediate medical attention.
