This case presentation discusses two pediatric patients treated at Sultan-ul-Uloom College of Pharmacy in Hyderabad. The first case involves a 7-year-old boy diagnosed with osteomyelitis and treated with flucloxacillin and later clindamycin due to an allergic reaction, while the second case concerns an 18-month-old girl who underwent appendectomy for a perforated appendix and received a multimodal analgesic approach with careful monitoring of medication dosages. Both cases emphasize the importance of accurate dosing and drug therapy monitoring in pediatric patients.