'Remarkable' Alzheimer's drug reduces cognitive decline, study shows

US pharmaceutical giant Eli Lilly on Wednesday announced its experimental Alzheimer’s drug significantly slowed cognitive and functional decline, results hailed as “remarkable” by experts despite some patients experiencing serious side effects.

In an analysis of nearly 1,200 people in the early stages of the disease, donanemab slowed the progression of symptoms by 35 percent over a period of 18 months compared to placebo.