Use this medicine only if you are over 18 years of age. This drug works in sex. It is a drug used in the treatment of sexual intercourse in life. Sildenafil increases the speed in the blood. fildena is a medicine that works well in getting adequate erections in men. You should take that medicine 1 hour or 30-35 minutes before you have sex. It is more effective if you take the medicine on a full stomach. 4-5 hours effect. Usually affects the individual.