This medicine mainly works in men. fildena 50 This medicine is called Sildenafil. In sexual function, it works in constant refill. The use of that medicine is not more than 18 years of age. It works in sex. It works well in sustaining an erection for 4-5 hours if it is taken with more and more pleasure. It works by stimulating it into the bloodstream. It works in the weak part. The drug is sold online or offline.