Gaia Herbs Eleuthero Root delivers full-spectrum Eleuthero (Eleutherococcus senticosus) — also known as Siberian Ginseng — the classic adaptogenic root used for decades by Russian and Soviet researchers to improve physical endurance, mental performance under stress, and immune resilience. Eleuthero is classified as a true adaptogen: it improves the body's non-specific resistance to a broad range of stressors.Eleutherosides (the primary active compounds, including Eleutheroside B and E) have been shown in multiple controlled trials to reduce heart rate response to acute stressors by up to 40%, improve oxygen utilization during exercise, and support immune function under physical and psychological stress. Eleuthero supports the adrenal-pituitary axis and helps normalize cortisol response without the stimulant effect of true ginsengs. Well-suited for athletes, those with demanding physical or cognitive workloads, and individuals recovering from fatigue. Non-GMO, gluten-free, vegan. Liquid Phyto-Caps®. Available at Beauty Riche with same-day shipping.