Fildena 150 mg is the drug that works best for treating male sexual problems like impotence, erectile dysfunction, and premature ejaculation. One of Fildena 150 ingredients, sildenafil, relaxes penile muscles to help men with their issues. This works best when taken half an hour or so before engaging in sexual activities. The effects last for four to six hours. You can take this medication with or without food. Follow your doctor's instructions and take Fildena 150.