Erectile dysfunction and impotence are treated with the drug Tadarise. One ingredient in the drug that increases blood flow to men's penile tissue is tadalafil. Take this medication an hour before having sex with your partner to ensure that you enjoy the experience. Avoid taking this medication with fatty foods or alcohol as they will slow down its effects. The half-life of this medication is 36 hours. When taking this medication, heed your doctor's instructions.