Medical effect: Tadalafil is one of the most effective PDE-5 inhibitors. It helps to relax penile arteries and the smooth muscle of the corpus cavernosum. By this, Cialis tablets increase penile blood flow and cause an erection.
Cialis (Tadalafil) tablets 20 mg for erectile dysfunction from Japan inhibit an enzyme called PDE5 and increase blood flow to the penis. Clinical trials have proven tadalafil’s safety and efficacy (R. M. Coward, C. C. Carson. Tadalafil in the treatment of erectile dysfunction. Therapeutics and Clinical Risk Managemeng.
Also, these tablets have two useful features. First one is that the erection doesn’t occur without sexual stimulation after this medication. Second one is that Cialis tablets have long half-life of 17.5 hours. It’s recommended to take the tablet approximately 1 hour before sexual intercourse in order to give some time to active ingredient to start working. However, it’s completely OK if it would take more than 1 hour, the efficacy won’t be reduced.