Depression is a common mental illness that damages the life and health of patients and causes economic burden, and HPA (hypothalamic-pituitary-adrenal) axis dysfunction is considered to be one of the important factors leading to depression. In this case, it is essential to explore possible treatment methods by using natural compounds with HPA axis regulating and antidepressant effects. However, no one has reviewed it so far. Therefore, the purpose of this review is to systematically sort out the related natural products that play an antidepressant role by regulating the function of the HPA axis. Natural products are divided into flavonoids, polyphenols, terpenoids, saponins, polysaccharides and so on according to their chemical structures, which play a variety of biological activities such as regulating the HPA axis, anti-inflammation and neuroprotection. These effects may provide a useful reference for the potential treatment of depression so as to develop new antidepressants.
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