Rhodiola RoseaBroad spectrum adaptogen support for mental and physical stress Rhodiola rosea, a Siberian herb also known as rhodiola, has been used traditionally for hundreds of years to help reduce mental and physical stress. A recent double blind crossover study suggests that rhodiola may help reduce fatigue under stressful conditions and support concentration and short term memory. Rhodiola promotes the activity of neurotransmitters like serotonin,