Question

Male Reproductive Agent

How does Cialis interact with other medications or foods?

A Answers (1)

  • AStacy Wiegman, PharmD, Pharmacy, answered

    Cialis (tadalafil) should not be taken if nitrates are already being used. Nitroglycerin and other prescription forms of nitrates, such as erythrityl tetranitrate, isosorbide dinitrate, isosorbide mononitrate and pentaerythritol tetranitrate, should not be taken when using Cialis, nor should the recreational forms amyl nitrite and butyl nitrite.

    Other drugs, such as sildenafil or vardenafil, used for the treatment of erectile dysfunction, should not be taken at the same time as Cialis, since side effects could increase. Cialis may have some negative interactions with certain drugs, but it may be necessary and possible for your doctor to adjust dosages and prescribe Cialis along with them. They include: atazanavir, bunazosin, clarithromycin, erythromycin, indinavir, itraconazole, ketoconazole, moxisylyte, nefazodone, nelfinavir, phenoxybenzamine, phentolamine, prazosin, saquinavir, simvastatin, telithromycin, terazosin, trimazosin and urapidil.

    Other drugs may cause more side effects in men taking Cialis, but with proper monitoring and dosing they may still be used. They might include the following: alfuzosin, doxazosin, rifampin, ritonavir, silodosin, tamsulosin and tipranavir. Adcirca is the brand name of another tadalafil drug used for treating pulmonary arterial hypertension. It should not be taken when Cialis is also prescribed. Cialis can be taken with or without eating. However, excess alcohol and grapefruit or grapefruit juice may affect how Cialis works or may increase some side effects. It is possible that over-the-counter medications, vitamins and herbal supplements may interact with Cialis. Be sure to discuss all medications you are taking with your doctor before starting Cialis.

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Who should not take Cialis?