Rhodiola helps fight physical stress effectively Standardized to minimum 1% salidrosides and 3% rosavins 250 mg per capsule Rhodiola Rosea is a go-to herbal supplement to help fight the mental and physical effects of stress. This potent Swanson Superior Herbs formula helps support levels of key brain chemicals involved in regulating mood. This formula is standardized to 1% salidrosides and 3% rosavins.