Acetaminophen/Ibuprofen Dosage Chart. Acetaminophen (Tylenol® or another brand) Give every 6 hours as needed. Do not give more than 4 dosesAcetaminophen liquid 160mg*/5ml *Double check concentration 40 mg (1.25 ml) 48 mg (1. 5 ml) 64 mg (2 ml) 80 mg (2.5 ml) 96 mg (3 ml) 120 mg...