Siberian ginseng (Eleutherococcus senticosus) roots contain powerful antioxidant compounds that may help with inflammation, blood sugar control, and brain health. Researchers found that certain plant fractions were particularly rich in protective compounds like chlorogenic acid and caffeic acid. However, the study also discovered a concerning finding: these plant compounds protected cancer cells from chemotherapy drugs, suggesting people undergoing cancer treatment should be cautious about using this supplement.