What are the possible drug interactions of Cialis?
Inform your healthcare provider, during either a physical or online consultation, about all prescription and non-prescription medications you use, especially any nitrate medications (e.g., nitroglycerin, isosorbide dinitrate), nitroprusside (any “nitric oxide donor” medicines), cimetidine, erythromycin, azole antifungals (e.g., itraconazole, ketoconazole pills), mibefradil, rifamycins (e.g., rifampin), high blood pressure medicines, alpha-blockers, or HIV protease inhibitors. Do not start or stop any medicine without your healthcare provider’s approval.
If you are taking certain alpha-blockers for the treatment of heart disease, such as Hytrin (terazosin) or Flomox (tamsulosin), or if you are taking certain protease inhibitors for the treatment of HIV, such as saquinavir, ritonavir, or amprenavir, it is recommended not to exceed a maximum single dose of 2.5 mg of Cialis in a 72-hour period, because the combination of Canadian Cialis with such drugs may lower blood pressure to an unsafe or life-threatening level. Be sure to consult your healthcare provider about this.
If you are taking azole antifungals (such as ketoconazole or itraconazole), it is recommended not to exceed a maximum single dose of 5 mg of Cialis in a 24-hour period.
Cialis is not recommended for people taking commonly prescribed short and long-acting nitrates because the combination may lower blood pressure.
Commonly prescribed short and long-acting nitrates available in the US are: Nitroglycerin, Deponit, Minitran, Nitrek, Nitro-Bid, Nitrocine, Nitro-Derm, Nitro Disc, Nitro-Dur, Nitrogard, Nitroglycerin, Nitroglycerin T/R, Nitroglyn, Nitrol Ointment, Nitrolan, Nitrolingual Spray, Nitrong, Nitropar, Nitropress, Nitroprex, Nitro S.A., Nitrospan, Nitrostat, Nitro-Trans System, Nitro Transdermal, Nitro-Time, Transderm-Nitro, Tridil, Isosorbide Mononitrate, Imdur, ISMO, Isosorbide Mononitrate, Monoket, Isosorbide Nitrate, Dilatrate-SR, Iso-bid, Isordil, Isordil Tembids, Isosorbide Dinitrate, Isosorbide Dinitrate LA, Sorbitrate, Sorbitrate SA, Pentaerythritol Tetranitrate, Peritrate, Peritrate SA, Erythrityl Tetranitrate, Cardilate, Isosorbide Dinitrate/Phenobarbital, Isordil w/PB.
Illegal drugs containing organic nitrates are: amyl nitrate or nitrite (also known by various other names, including “poppers”), butyl nitrate.