RHODIOLA ROSEA AS A NATURAL ADAPTOGEN: A REVIEW OF ITS EFFECTS ON STRESS REDUCTION, MOOD ENHANCEMENT, AND COGNITIVE FUNCTION

Introduction: Rhodiola rosea is a widely used adaptogenic herb known for its potential to enhance the body’s resistance to physical and psychological stress. Traditionally employed in various medical systems, it has recently gained scientific attention for its beneficial effects on mood regulation, stress reduction, and cognitive performance. The complex phytochemical composition of Rhodiola rosea underpins these effects, yet the precise mechanisms and clinical efficacy remain to be fully elucidated. This review aims to comprehensively summarize current knowledge regarding the phytochemistry, mechanisms of action, preclinical and clinical evidence of Rhodiola rosea’s adaptogenic properties, focusing on its impact on stress reduction, mood enhancement, and cognitive function. Mechanisms of action involving modulation of the hypothalamic-pituitary-adrenal (HPA) axis, neurotransmitter systems, and antioxidant pathways are discussed. Despite promising results, further high-quality, large-scale randomized controlled trials are needed to establish standardized protocols for clinical use. Material and methods: A systematic literature analysis was conducted, including in vitro, animal, and human studies investigating Rhodiola rosea extracts. Emphasis was placed on studies examining biochemical pathways, neurobehavioral outcomes, and clinical trials assessing stress-related parameters, mood states, and cognitive metrics. Results: Rhodiola rosea exhibits modulatory effects on monoaminergic neurotransmission, enhances antioxidant defenses by upregulating enzymes such as superoxide dismutase and catalase, and improves mitochondrial function, leading to increased cellular energy production. Clinical studies demonstrate significant reductions in perceived stress and fatigue, improvements in mood disorders including mild to moderate depression, and enhanced psychomotor performance and cognitive processing speed. However, variability in extract standardization and study design influences the consistency of findings. Conclusions: Rhodiola rosea represents a promising natural adaptogen with multifaceted actions supporting stress resilience, mood stabilization, and cognitive enhancement. Standardized extracts with defined phytochemical profiles are essential to ensure reproducible therapeutic effects. Further rigorous clinical investigations are warranted to clarify optimal dosing regimens and long-term safety.