Background: Breast milk is the main food source for infants' growth and development. Insufficient milk is one of the obstacles to the adequate use of this substance. One of the treatments to help this issue is acupressure. Therefore, the present study was designed to determine the effect of acupressure on maternal milk volume.

Materials and methods: This study is a randomized clinical trial in which 60 breastfeeding mothers complaining of hypogalactia and meeting the inclusion criteria were studied. In addition to providing routine education, bilateral acupressure was performed for 12 consequentia l days on the acupoints of SI1, LI4, and GB21 in the intervention group, as three sessions per week with each session conducted 2-5 times. The control group received only routine education. In both groups, breast milk volume before intervention and 2 and 4 weeks after intervention was evaluated by an electric pump. Data were analyzed by descriptive and inferential statistical analysis through SPSS.

Results: The t-test showed no significant difference in the mean volume of milk in the two groups (P = 0.543). Mean volumes of milk before and 2 and 4 weeks after the intervention were 10.5 (8.3), 33 (13.44), and 36.2 (12.8), respectively, in the acupressure group and 9.5 (7.7), 17.7 (9.4), 18 (9.5), respectively, in the control group. Analysis of variance (ANOVA) test showed a significant difference in the mean volume of milk at 2 and 4 weeks after the intervention (P < 0.001).

Conclusions: Both acupressure and general education methods were effective on the milk volume of breastfeeding mothers. Acupressure method was more effective than the other method. Therefore, application of acupressure as a method of alternative medicine to increase breastfeeding is suggested.