PDE5 inhibitors are a class of medications that includes kamagra. Your penis's blood vessels relax as a result of its action. This permits blood to enter the penis and result in an erection when a person becomes sexually aroused. The ideal time to take it is one hour before having sex. However, it can be taken at any time between 30 and 4 hours prior to having intercourse. If, following sexual activity, the erection lasts more than four hours, get medical help. It is quite effective, but you have to take it 30 minutes before having sex. Because women are not supposed to use Kamagra, males should speak with a doctor before taking any other drugs to treat impotence. You can Kamagra Online at our Mygenerix.com store. It can be hazardous to take it along with drugs that contain nitrate.