Diabetes is a serious chronic condition that occurs due to the pancreas's inability to produce insulin in sufficient quantities or because the body cannot effectively use the insulin it produces. In general, the use of traditional medicine is considered safer compared to modern treatments. One of the plants used as traditional medicine by the Dayak community is the laban plant, also known as halaban (Vitex pinnata), a plant native to Kalimantan. This study aims to analyse the effect of consuming boiled halaban (Vitex pinnata) leaf water on blood glucose levels. The research employed a quasi-experimental design with a control group and a pre-test–post-test approach. A total of 21 respondents were selected using a simple random sampling technique. The results of the Wilcoxon test showed that before the intervention (pre-test), the majority of respondents (75.0% or 15 individuals) had high blood glucose levels. After consuming the boiled halaban leaf water (post-test), 50.0% (10 individuals) experienced a decrease in blood glucose levels to the moderate category. The Wilcoxon test indicated a statistically significant reduction in blood glucose levels after the intervention (p = 0.000, < 0.05). It can be concluded that consuming boiled halaban leaf water has a significant effect in lowering blood glucose levels.
                        
                        
                        
                        
                            
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