Contact your medical doctor or look for crisis clinical consideration When your erection is unpleasant or lasts for a longer time than 4 several hours. A chronic erection (priapism) can injury the penis. (With priapism, you've got an erection that lasts more time than 4 hours and may be painful.) https://emilianopppnn.laowaiblog.com/34280826/facts-about-viagra-revealed