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Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include: aminophylline, certain drugs used to treat chest pain/angina or high blood pressure (nitrates such as nitroglycerin, isosorbide), dipyridamole, drugs to treat erectile dysfunction-ED/pulmonary hypertension (such as sildenafil, tadalafil, vardenafil), recreational drugs called "poppers" containing amyl or butyl nitrite, theophylline, vericiguat.
Cigarette smoking decreases blood levels of this medication. Tell your doctor if you smoke or if you have recently stopped smoking.
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