How to Take Cialis

Take one Cialis tablet before sexual activity. Some form of sexual stimulation is needed for an erection to happen. In some patients, the ability to have sexual activity was improved 30 minutes after taking Cialis and the ability to have sexual activity was improved up to 36 hours after taking it. You and your doctor should consider this in deciding when you should take Cialis prior to sexual activity.

Cialis Precautions

Before taking Cialis, tell your doctor about all your medical problems, including any heart problems such as angina, heart failure, irregular heartbeats, or heart attack; low blood pressure or high blood pressure that is not controlled; have had a stroke; liver problems; kidney problems or require dialysis; retinitis pigmentosa, a rare genetic eye disease; stomach ulcers; a bleeding problem; a deformed penis shape or Peyronie's disease; have had an erection that lasted more than 4 hours, or have blood cell problems such as sickle cell anemia, multiple myeloma, or leukemia.

Drug Interactions

Tell your doctor about all the medicines you take including prescription and non-prescription medicines, vitamins, and herbal supplements. Cialis and other medicines may affect each other. Always check with your doctor before starting or stopping Cialis or any other medicine. Especially tell your doctor if you take any of the following medicines: nitrates; alpha blockers (including Hytrin® (terazosin HCl), Flomax® (tamsulosin HCl), Cardura® (doxazosin mesylate), Minipress® (prazosin HCl) or Uroxatral® (alfuzosin HCl); ritonavir (Norvir®) or indinavir (Crixivan®); ketoconazole or itraconazole (such as Nizoral® or Sporanox®); erythromycin; or other medicines or treatments for ED.

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