 [ Symptoms ] can i give my 11 year old son ibuprofen liquid gel he is 70 pounds [ Disease ] at his weight he can take 300 mg by mouth every 6 hours with food this is equivalent to 3 tsp 15 ml of liquid 6 tablets of the 50 mg chewable tablets or 3 tablets of the 100 mg caps or chew it is important to read the label on the box to see how much one dose is equal to in milligrams and then calculate from there 