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Oral administration.
500 mg: 1-2 tablets every 4 to 6 hours as needed.
Do not take more than 8 tablets in 24 hours.
650 mg: The adult dose is 650mg (1 tablet) to 975 mg (1½ tablets), 3 or 4 times daily. Not more than 3.9g (6 tablets) in 1 day unless advised by the physician.
