Cenforce 100 is a drug that may be purchased online. It is helpful in treating erectile dysfunction and is accessible in pharmacies and online. However, this medication might produce headaches, face flushing, and nausea as well as other negative effects. If you have any of these side effects, stop taking the medication and see a doctor. Phosphodiesterase type 5 (PDE5), a protein that breaks down cyclic guanosine monophosphate, or cGMP, is inhibited. Smooth muscles in the penis relax when cGMP is created, enabling blood to circulate and maintain erections.