Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. LEVITRA and other medicines may affect each other. LEVITRA can cause your blood pressure to drop suddenly to an unsafe level if it is taken with medicines called nitrates. With a sudden drop in blood pressure, you can get dizzy, faint, or have a heart attack or stroke. You should not take LEVITRA with medicines called nitrates.
Always check with your doctor before starting or stopping any medicines. Especially tell your doctor if you take any of the following:
- medicines called nitrates
- medicines called alpha-blockers. These include Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl) or Uroxatral® (alfuzosin HCl). Alpha-blockers are sometimes prescribed for prostate problems or high blood pressure. In some patients the use of PDE5 inhibitor drugs, including LEVITRA, with alpha-blockers can lower blood pressure significantly, leading to fainting. You should contact the prescribing physician if alpha-blockers or other drugs that lower blood pressure are prescribed by another healthcare provider.
- medicines that treat abnormal heartbeat. These include quinidine, procainamide, amiodarone and sotalol.
- ritonavir (Norvir®) or indinavir sulfate (Crixivan®), saquinavir (Fortavase® or Invirase®) or atazanavir (Reyataz®)
- ketoconazole or itraconazole (such as Nizoral® or Sporanox®)
- erythromycin or clarithromycin
- other medicines or treatments for ED
