A nurse is caring for a client who is postpartum following a vaginal birth. Which of the following analgesic medications should the nurse plan to administer and document in the client's medical record?

A. Fentanyl citrate is a potent opioid, typically reserved for severe pain and usually administered in controlled settings, not first-line postpartum analgesia. B. Meperidine is less commonly used due to side effects and safety concerns. C. Aspirin is generally avoided postpartum due to bleeding risks. D. Ibuprofen is a nonsteroidal anti-inflammatory drug (NSAID) commonly used postpartum for pain relief and inflammation control with a safer profile for breastfeeding mothers.