Tadalafil comes as a tablet to take by mouth. The mechanism of action for ED pills is simple: They inhibit the PDE5 enzyme which regulates the signals responsible for the smooth muscle tissue. Psychological factors like stress, depression, or anxiety can also contribute. When will Cialis be available to pharmacies? Ask your pharmacist for a list of the ingredients. Take tadalafil at around the same time every day.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. You need a prescription to get Cialis, which you can acquire through your doctor or telehealth sources. Online ordering can be a great alternative if you prefer the convenience and discretion. Cialis is a medicine used to treat erectile dysfunction (ED) in men. This article explains how it works, how to take it, possible side effects, myths and how to safely buy Cialis. Some people buy tadalafil online without a prescription. This isn’t a good idea, as you can’t be sure whether these pills contain the medicine or are.