This clinical trial is focused on understanding the effectiveness and safety of using a low dose of morphine hydrochloride for managing pain after a planned caesarean section, which is a surgical procedure to deliver a baby. The study will compare the effects of adding a small amount of morphine to the usual pain management methods against a placebo. The goal is to see if this approach can help reduce pain and ensure safety for both the mother and the newborn.

Participants in the study will receive either the low-dose morphine or a placebo during their caesarean section, which is performed under spinal anesthesia. The study will monitor the level of pain when moving from lying down to sitting up within the first 24 hours after surgery. It will also look at the safety of both the mother and the baby, including any breathing issues, severe nausea or vomiting, and the need for hospital admission within a week after leaving the hospital.

Additionally, the study will track the amount of opioid medication used within the first 24 hours, any side effects related to morphine such as nausea or dizziness, and the overall recovery experience of the mother. The satisfaction with pain management and the success of breastfeeding after 30 days will also be evaluated. The trial aims to provide valuable insights into improving pain management for mothers undergoing a caesarean section.