One drug used to treat male erectile dysfunction is called Tadarise 20. Tadalafil is the primary ingredient in this drug. By boosting blood flow to the penis, this drug helps to maintain an erection during sexual activity and increase sexual arousal. You can take this medication with or without food. Reviews of Tadarise are shown from our store. When this medication is taken with cold beverages or fatty meals, its effects will be slowed down. It takes four to six hours for this medication to start working. When taking this medication, it is important to follow your doctor's instructions.