Cialis is an oral drug that is used to cure impotency. It contains Tadalafil , which belongs to a group of drugs called phosphodiesterase inhibitors. It comes in 4 strengths of 2.5mg, 5mg, 10mg and 20mg. Besides containing Tadalafil, its inactive ingredients are:- iron oxide, croscarmellose sodium, hydroxypropyl cellulose, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, sodium lauryl sulfate, talc, titanium dioxide, and triacetin.
By disallowing muscle relaxation in the penis and increased blood flow, phosphodiesterase type 5 [PDE5] reduces the erectile functioning. Tadalafil sets this dysfunction right by inhibiting PDE5.
