Albizia julibrissin, also known as the Persian Silk Tree or Mimosa, has a long history of use in traditional Chinese medicine (TCM) for emotional disturbances, including mood swings, anxiety, and depression. In TCM, it is often referred to as "He Huan Pi" (the bark) or "He Huan Hua" (the flower) and is classified as a herb that "calms the spirit." Traditional texts describe its use for relieving constraint, calming the heart, and improving mood, particularly in cases of irritability, restlessness, and emotional instability.

The scientific evidence supporting Albizia julibrissin for mood swings is limited. Some preclinical studies (in vitro and animal models) have indicated possible anxiolytic (anxiety-reducing) and antidepressant-like effects, possibly through modulation of neurotransmitters such as serotonin and dopamine. For example, research on rodents has shown that extracts of the bark and flowers may have sedative and mood-stabilizing properties. However, there is a lack of robust, high-quality clinical trials in humans evaluating its efficacy specifically for mood swings. The traditional use is therefore not strongly supported by modern scientific validation, but its ongoing presence in herbal formulas and ethnobotanical records provides a rationale for its continued use in traditional practice.

In summary, Albizia julibrissin is used traditionally for mood swings, but current scientific evidence is limited and not definitive.