비아그라에 대한 이 보고서 검토

Sildenafil belongs to a class of drugs called phosphodiesterase type five (PDE5) inhibitors. A category of drugs is a group of drugs that get the job done in an analogous way. These medicine in many cases are utilised to treat identical ailments.But Should you have an erection that lasts for a longer time than four hrs, seek advice from a doctor ri