<s>[INST] My daughter who is 11 years old has a fever and headache. She is approximately 120lbs. The Children s syrup does not cover her weight and she doesn t like taking tablets. I started her on 15ml children s Motrin but it s barely covering 4hrs. What do you recommend? [/INST] Hello.  I just read through your question.A person with her weight can safely take 20 ml of children's motrin every 6 hours. This should help. If the symptoms persist beyond 24 hours, however, I recommend consulting with your doctor. </s>