For prescription ibuprofen, the typical dose is 400 mg, 600 mg, or 800 mg by mouth 3 to 4 times per day, up to 3,200 mg per day. For children younger than 12 years old, the maximum amount of ibuprofen they can take per day depends on their age and weight and the formulation they're using. But they generally shouldn't take ibuprofen more than 4 Children 6 to 11 years: 325 mg every 4 to 6 hours; maximum daily dose: 1,625 mg/day. Children ≥12 years and Adolescents: Regular strength: 650 mg every 4 to 6 hours; maximum daily dose: 3,250 mg/day unless directed by a physician; under physician supervision daily doses ≤4,000 mg may be used. Extra strength: 1,000 mg every 6 hours; maximum For this medication, it is recommended that you give your dog 0.45 mg - 0.91 mg/lb./day as a single dose as needed. The brand name for this medication is Deramaxx. We will go off the recommended Deramaxx dosage to create our chart for this medication. Before reading the chart, note that this is going off a .5 mg/lb. dosage. Kklftj.