lecanemab

Lecanemab, sold under the brand name Leqembi, is a monoclonal antibody medication used for the treatment of mild Alzheimer's disease. Lecanemab is an amyloid beta-directed antibody. It is given via intravenous infusion or subcutaneous injection. In clinical trials, it demonstrated small or no clinically significant efficacy in Alzheimer's disease. The most common side effects of lecanemab include headache, infusion-related reactions, and amyloid-related imaging abnormalities, a side effect known