Yang Xin Tang (YXT), a traditional Chinese herbal preparation recorded in Gujin Yitong Daquan, exerts protective effects for AD patients and the underlying mechanisms are elucidated in an in vitro study, including inhibiting β-amyloid aggregation, β-amyloid-induced cytotoxicity and activities of the acetylcholinesterase (Lo et al., 2023). Here, ACHE is linked to Alzheimer disease.