Aurogra 100 sildenafil 100mg is not a drug for sexually provoking a man. This remedy is worth it in scenarios that turn you on sexually. To understand the mechanics involved, it is necessary to understand how a man achieves an erection. The production of NO promotes a chemical that gives rise to another material cGMP or cyclic guanosine monophosphate. This cGMP messenger substance loosens the smooth muscle cells of the penis.