Adaptogens are a class of substances (typically herbs) which promote homeostasis. Homeostasis is the bodies tendency to restore balance and equilibrium to its physiological processes. When the body is restored to its optimal conditions through homeostasis, this can reduce stress, fatigue, and improve mood and energy levels.
Adaptogens are characterized by being non-toxic, non-addictive, and non-specificity (meaning a generalized and vague set of various physiological effects).
Many adaptogens such as ashwagandha and rhodiola have been studied extensively and have sufficient evidence that establish them as effective nootropics.
List of commonly used adaptogens: