Background: Inadequate breast milk production and ejection during the early postpartum period may interfere with successful exclusive breastfeeding. Non-pharmacological interventions, including the Marmet technique, may help stimulate lactation and facilitate breast milk ejection. Purpose: This study aimed to determine the effect of breast massage using the Marmet technique on breast milk production among postpartum mothers. Method: This quantitative study used a pre-experimental design with a one-group pretest-posttest approach. The study involved 30 postpartum mothers selected using purposive sampling. The Marmet technique was administered twice daily for seven consecutive days. Breast milk production was assessed before and after the intervention using a 10-item observation instrument based on indicators of breast milk adequacy. Data were analyzed using the Wilcoxon Signed-Rank Test. Results: The mean breast milk production score increased from 3.03 ± 0.999 before the intervention to 8.87 ± 1.008 after the intervention. The Wilcoxon Signed-Rank Test showed a statistically significant difference between pretest and posttest scores (Z = −4.815; p < 0.001). Conclusion: Breast milk production scores improved significantly following the seven-day Marmet technique intervention. The Marmet technique may be considered a non-pharmacological intervention to support lactation among postpartum mothers.
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