Rhodiola is a flowering plant found mainly in the arctic regions of Europe, Asia and North America. Also known as 'rose root' or 'arctic root', its long history dates back to the times of the Vikings who used it to give energy to their warriors.
The properties are found in its root and are known since ancient times and used in traditional Chinese medicine, Siberia and Scandinavia. Normally, the recommended daily dose or that has shown effects is "around 300-400mg/day for several weeks"