Fildena 100 (sildenafil citrate) has a clearly supporting effect when taken orally. The drug restores the strength of erections in areas that use (fully or partially) the mediated sexual abilities. As before, Fildena is intended for male patients. Fildena is prescribed 1 hour before sexual intercourse, washed down with a glass of water.The onset of action depends on the personal characteristics of the human body and does not fit in 30-50 minutes.