Tadarise 40 is a treatment for impotence and erectile dysfunction in men. Adhere to your doctor's instructions when using this medication. It takes five hours for this medication to start working. Take this medicine 30 minutes before engaging in sexual activity to maximize the time you spend with your partner. It takes four to six hours for this medication to start working. Additionally, you can take this medication before or after eating. One of the ingredients in this drug, tadalafil, helps men ejaculate for longer periods of time. You should take this medication as directed by your doctor. This medication is only for males who are at least eighteen years old.