心境稳定剂[1](英语:mood stabilizer,中国大陆作心境稳定剂[1],台湾作情绪稳定剂[2])是一种精神药物,当患者出现以情绪波动为特征的心境障碍(例如双相情绪障碍症和分裂情感障碍)时就要服用此类精神药物。[3]心境稳定剂可以阻止患者突然躁狂(或轻躁狂)和抑郁。[4] [1]心境稳定剂. 术语在线. [2024-06-02]. [2]情緒穩定劑. 乐词网. [2024-06-02]. [3]Texas State - Student Health Center. (原始内容存档于2008-08-28). [4]Schizoaffective disorder - Diagnosis and treatment - Mayo Clinic. www.mayoclinic.org. Mayo Foundation for Medical Education and Research. [10 July 2020]. (原始内容存档于2020-08-05) (英语).