Visit Store What does cialis do? Tadalafil is its active ingredient and is available as a generic drug. Subsequently, the FDA approved both vardenafil [27] and tadalafil in For many, Cialis has emerged as a trusted companion, weaving stories of physical and emotional wellness. Cialis was also investigated in combination with finasteride, another BPH medication, in another trial. What special precautions should I follow? The results showed the combination to be even more effective than either medication alone.Valid at all major chains including Walgreens, CVS Pharmacy, Target, WalMart Pharmacy, Duane Reade and 65, pharmacies nationwide. No manufacturer promotions could be found for this medication. Patient Assistance & Copay Programs for Cialis. Both Cialis and tadalafil treat ED at the following doses: mg. 5 mg. 10 mg. 20 mg. At 20 mg, both drugs are also approved to treat symptoms of benign prostatic hyperplasia (BPH), such as difficulty urinating. They work by relaxing the muscle cells in the prostate, allowing urine to flow out of the bladder. We have good news for you: generic Cialis, used to treat erectile dysfunction (ED) and enlarged prostates, just hit pharmacies. Prices for the generic, known as .