Motrin or Advil (Ibuprofen) Dosing INFANT Formulation: 50 mg / 1.25 ml Weight (lbs) 12-17 lbs 18-23 lbs 24-35 lbs 35-47 lbs Dose mL 1.25 mL 1.875 mL 2.5 mL 3.75 mL Dose mg 50 mg 75 mg 100 mg 150 mg RETURN TO MAIN DOSING PAGE