It is not recommended to take sildenafil or Kamagra Pill more than once a day. One pill should be taken with a glass of water approximately one hour before the patient plans to have intercourse. A guy needs to be sexually excited for this drug to assist him achieve an erection. Each person experiences the drug's effects differently, but generally speaking, it takes between 30 and 60 minutes to start working. Keep at room temperature in an airtight container away from dampness, direct sunlight, children, and pets. If you are younger than eighteen, do not take this drug.