Tadalafil Cialis is used to treat erectile dysfunction ED, impotence; inability to get or keep an erection , and the symptoms of benign prostatic hyperplasia BPH; an enlarged prostate which include difficulty urinating hesitation, dribbling, weak stream, and incomplete bladder emptying , painful urination, and urinary frequency and urgency in adult men. In trials investigating Cialis, the majority of participants receiving the drug experienced a significant improvement in ED and maintained an erection. Cialis will be available by prescription only. This is high blood pressure that occurs in the main artery that carries blood from the right side of the heart the ventricle to the lungs. Combined use could lead to additional lowering of blood pressure, possibly to unsafe levels. Do not take more or less of it or take it more often than prescribed by your doctor.What Is Cialis? Cialis is a brand-name prescription medication. It belongs to the drug class known as PDE5 inhibitors. Tadalafil is its active ingredient and is available as a generic drug. The FDA has approved Cialis to treat ED, symptoms of BPH, or combined ED and BPH in males with both conditions. The drug is approved for use in adults.  · Description and Brand Names. Drug information provided by: Merative, Micromedex® US Brand Name. Adcirca; Cialis; Descriptions. Tadalafil is used to treat . Brand-name and generic Cialis: The price for brand-name Cialis can be pretty high and might be outside of many people’s budgets. We included services that offer brand-name Cialis and generic.