You can take Tadarise 20 mg  either after eating or on an empty stomach.You should adhere closely to your doctor's instructions when using Tadarise.You can take it with a glass of water 30 to 60 minutes before having sex. Tadarise should only be taken once daily. Avoid taking more than one tablet at once.Observe the directions on the label or prescription at all times.This oral jelly works best when taken with water 30 to 40 minutes beforehand.