The present invention provides a composition for treating symptoms related to menstruation, which comprises α-lactalbumin. The present invention also provides a method for non-medical treatment of symptoms related to menstruation, which comprises: ingesting a composition containing an effective amount of α-lactalbumin to a subject, and binding the ingested α-lactalbumin to The steps of the subject's serotonin transporter; and providing a method (except for human medical behavior) which is a method for inhibiting the reintroduction of serotonin by binding α-lactalbumin to the serotonin transporter.本發明提供一種用於處置與月經有關症狀之組成物,其包含α-乳白蛋白。本發明又提供一種方法,其係用於處置與月經有關症狀之非醫療性方法,其包含:使對象攝取包含有效量的α-乳白蛋白之組成物,並使攝取之α-乳白蛋白結合於對象的血清素轉運蛋白之步驟;及提供一種方法(對人類之醫療行為除外),其係血清素的再導入之抑制方法,其係藉由使α-乳白蛋白結合於血清素轉運蛋白。