An adaptogen is a herbal product claimed to increase resistance to stress, trauma, anxiety and fatigue. The term is used mainly by herbalists who also refer to adaptogens as rejuvenating herbs, qi tonics, rasayanas, or restoratives. There is no strict definition of the adaptogenic characteristics of a plant product, leading to a generalized usage of the term for commercial or non-scientific reasons.
Ginseng, one of the better known adaptogens, is generally considered safe, although there are some possible side effects, especially associated with higher doses - including increased heart rate, nausea, headaches, trouble sleeping, and restlessness. Possible effects in women may include swollen breasts and vaginal bleeding.[1]