Instructed patient caregiver avoid dehydration, you should try to drink 8 to 10 eight-ounce glasses of fluid a day. If you have diarrhea, you may need more. Drinks such as Gatorade®, PowerAde, or Pedialyte contain potassium and sodium. But any liquid containing water (soda, milk, juice, tea, etc.) helps to meet your daily need for fluid.