Oral: 1  Capsule: take 3 times a day, with or without food. 2  Tablet: take 3 or 4 times a day, with or without food. 3  Extended-release tablet: take 1 or 2 times a day, with or without food. 4  Powder for oral solution: mix with 1 to 2 ounces (30 to 60 mL) of water and taken by mouth once a day, without food.