VIAGRA (Sildenafil) belongs to a gaggle of medicines called phosphodiesterase type 5 inhibitors. it's used for the treatment of male erectile dysfunction (male impotence). It helps to realize and keep an erection sufficient for sexual intercourse. It does this by allowing a greater blood flow into the penis when a person is sexually aroused. It works only with sexual stimulation and doesn't increase concupiscence.
Medical instructions should be...