Memantine has been prescribed for more than 20 years for various brain disorders, including dementia, because it is believed to protect against high levels of a neurotransmitter called glutamate.

• 美金刚胺已经被开给各种脑疾病的病人超过20年了，这些病人包括痴呆症患者。因为人们相信美金刚胺可以保护人脑免受过量的谷氨酸盐（一种神经递质）的损害。