비아그라에 대해 거의 알려지지 않은 사실
Sildenafil belongs to a category of prescription drugs called phosphodiesterase sort 5 (PDE5) inhibitors. A class of drugs is a gaggle of prescription drugs that get the job done in the same way. These medicines will often be made use of to deal with equivalent circumstances.Viagra® and generic Viagra® contain sildenafil, which is similar medicin