Question: how often are you supposed to take metronidazole?
Answer: Adults—The tablet can be given 3 different ways: as a single dose of 2 grams, as 1 gram 2 times a day for 1 day, or as 250 milligrams (mg) 3 times a day for 7 days. The capsule dose is 375 mg 2 times a day for 7 days. Children—Use and dose must be determined by your doctor.