Breast milk is the primary source of nutrition provided by mothers to their infants during early life. It not only supplies essential nutrients required for growth and development but also contains various substances that protect infants against diseases and infections. Efforts to enhance husbands' knowledge through health education regarding exclusive breastfeeding represent a strategy to improve the quality of breastfeeding practices. This study aimed to analyze the impact of a pocketbook on husbands' knowledge concerning exclusive breastfeeding success among nursing mothers at the Mira Haryanti Independent Midwifery Practice (PMB) in Bangsalan, Teras, Boyolali. A quantitative, pre-experimental research design specifically a one-group pre-test/post-test design was employed. The study population consisted of all 30 husbands of nursing mothers attending PMB Mira. Total sampling was used as the sampling technique. Data were collected via questionnaires and analyzed using the Wilcoxon test. The Wilcoxon test results yielded a p-value of 0.0001; since the p-value was less than 0.05, it was concluded that the pocketbook had a significant effect on increasing husbands' knowledge regarding exclusive breastfeeding success among nursing mothers at PMB Mira Haryanti. This pocketbook serves as an alternative medium for health education or counseling to enhance knowledge.
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