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 1% salidroside.