Background: Women of childbearing age who have hypertension can continue or have the potential to experience hypertension in their pregnancy. The prevalence of hypertension in Indonesia tends to increase with age. Alternative treatment of hypertension with giving edamame (Glycine Max L. Merrill) which can reduce blood pressure. Objective: This study aims to determine the effectiveness of giving edamame supplementation (Glycine Max L. Merrill) on improving blood pressure in women of childbearing age with hypertension. Method: This research is a quasi-experimental with was the draft nonequivalent control group design. Data retrieval involved 40 respondents of women of childbearing age and still menstruating, selected through a technique non probability sampling with a method purposive sampling which was divided into 2 groups: the intervention group was given amlodipine drugs 5 mg / day and edamame extract (Glycine max L. Merrill) dose of 25 grams / day, while the control group was only given amlodipine 5 mg / day. Results: The results t test showed a significant difference with the mean systolic p value of 0.003 (<0.05) and diastolic p value of 0.001 (<0.05) means that the intervention group is better at lowering blood pressure than the control group, with a systolic difference of 20.7 mmHg and diastolic 9.5 mmHg. Conclusion: Giving of edamame supplementation (Glycine Max L. Merrill) 25 grams / day for 30 days is very effective in reducing blood pressure in women of childbearing age with hypertension.