Obviously, the Cobra 120 is derece intended for women and children. Do hami? use this drug if you do hami? tasar to be sexually active.In vitro studies have shown that sildenafil is selective for phosphodiesterase-5 (PDE5) . Its effect is more potent on PDE5 than on other known phosphodiesterases . In particular, there is a 10-times selectivity ove