Interactions of Cialis 20 MG Interactions with other medicines Some medicines can affect the way Cialis 20 mg tablet works or this medicine itself can reduce the effectiveness of other medicines taken at the same time. When treating BHP, Cialis works by relaxing the bladder muscles, which therefore allows for easy urination and strengthens the urine stream. While each PDE5 inhibitor differs slightly, they’re very similar in treating erectile dysfunction. Avoid drinking excess alcohol or caffeinated drinks as they can worsen the symptoms. Get started by completing an online visit. Is one better than the other?Learn more about Cialis oral. 1. This is a generic drug. The average cost for 30 Tablet(s), 5mg each of the generic (tadalafil) is $ You can buy tadalafil at the discounted price of $ by using the MDRx coupon, a savings of 93%. Even if this drug is covered by Medicare or your insurance, we recommend you compare prices. Here’s our process. How we vet brands and products Tadalafil is a generic version of the prescription drug Cialis. Doctors prescribe it to treat erectile dysfunction and benign prostatic. Cialis can cost around $ to $ per month out of pocket, depending on the dosage you need. The first generic version of Cialis was released in October , and other manufacturers have released generic versions since then. This has increased market competition, driving prices down.