A 9-year-old F (Wt: 25 kg) presents to the Emergency Department after a fall from monkey bars. She has a distal radius fracture that does not require reduction and multiple deep painful abrasions. You plan to discharge her home after applying an appropriate splint, dressing the abrasions and provide orthopedic follow-up. She has required Acetaminophen, Ibuprofen, and an opioid for pain management in the Emergency Department. What is the best prescription to send her home with for breakthrough pain on top of weight-based Acetaminophen and Ibuprofen?