Dopamine ne neurotransmitter, wanda wani sinadari ne da ake samarwa a cikin kwakwalwa kuma yana taimakawa wajen watsa sigina tsakanin ƙwayoyin jijiya. Yawancin lokaci ana danganta shi da jin daɗin jin daɗi, lada, da kuzari, kuma yana shiga cikin tsarin motsi, yanayi, da aikin fahimi. Dopamine kuma yana shiga cikin tsarin ladan kwakwalwa, wanda ke da alhakin ƙarfafa hali wanda ke haifar da sakamako mai kyau. An danganta rashin aiki a cikin tsarin dopamine da cututtuka daban-daban na jijiya da tabin hankali, gami da cutar Parkinson, schizophrenia, da jaraba.