TADASOFT-40 is a selective reversible inhibitor Tadalafil, a generic of Tadalafil. It acts directly on the spongy erectile tissue at the time of sexual arousal of the penis suggesting an erection. Under the influence of Tadalafil, the tone of the smooth muscles of the arteries decreases, the penis receives more blood, and as a result a stable erection appears. After application, do not be afraid of involuntary erection, it occurs only during natural arousal. No one will know that you have taken the drug.