maximum advil dosage 24 hours
Ibuprofen (such as Motrin or Advil). 1  Adults: The initial dose is 400 mg. 2  Follow-up doses are 200 mg to 400 mg every 4 hours as needed, up to a maximum of 4 doses in a 24-hour period. 3  Children: Check with your child's doctor if your child is less than 6 months old or less than 12 pounds. Follow-up doses are 200 mg to 400 mg every 4 hours as needed, up to a maximum of 4 doses in a 24-hour period. 2  Children: Check with your child's doctor if your child is less than 6 months old or less than 12 pounds. 3  Dosages are based on the child's weight.