Vidalista 20 mg is used to treat the condition of erectile dysfunction in men. The drug is also indicated in easing the signs and symptoms of benign prostatic hyperplasia (BPH). It belongs to a class of drugs called phosphodiesterase-5 (PDE5) inhibitors. The erection of male organ is the result of huge amounts of blood trapped in the organ. It is the cGMP responsible for erections. Tadalafil is just supposed to address cGMP and bring in rock like erections.