Roseroot (Rhodiola rosea) has been used to treat nervous system ailments, including depression, muscle weakness/fatigue, altitude sickness, and Parkinson's disease. Roseroot is often called an adaptogen, a type of plant that decreases cellular sensitivity to stress. It is believed to optimize serotonin and dopamine levels through monoamine-oxidase inhibition and its influence on opioid peptides.
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