Swanson Full Spectrum Rhodiola Rosea Root is the premium choice to counteract the mental and physical effects of stress. This potent herb from Swanson helps reduce levels of stress hormones while supporting levels of key brain chemicals involved in regulating mood. Our powerful capsules contain 400 mg of rhodiola root powder and provide a great way to conquer the mental and physical challenges of stressful times. Rhodiola is a popular supplement made from the root of the Rhodiola plant (R. rosea). Rhodiola is considered an adaptogen, which means it belongs to a class of natural substances that promote the body’s ability to adapt to environmental stressors. Historical records indicate that Vikings used rhodiola to battle against the effects of fatigue.