Fildena 100 mg is available in different strengths and forms. It must be taken at least half an hour before sexual activity. The drug works best when combined with sexual stimulation, so you should avoid taking it at least two hours before intercourse. It takes around six hours to work properly, but you can extend this time by taking it the same day as your next meal. Visit here : Fildena 200 mg , Fildena 150 mg