3% Standardized Extract. Helps body to adapt to stress of daily life. Rhodiola (Rhodiola rosea) is indigenous to the Arctic and Alpine regions of Europe, Asia and America and has long been used as a tonic by many cultures, including the Ancient Greeks. Rhodiola is generally known as an “adaptogen,” a term which refers to any agent possessing the ability to support the body’s natural capacity to adapt to life’s changing conditions. NOW® Rhodiola is standardized to 3% Total Rosavins and min. 1% Salidroside.