Types-based market taxonomy bifurcates the Alzheimer’s Therapeutics landscape into Chemical Drugs and Biological Drugs, each carrying distinct clinical-risk, manufacturing, and IP profiles. Chemical entities—encompassing Donepezil, Rivastigmine, Galantamine, Memantine and the newly launched triple-dose Memantine-Donepezil FDC—account for > 60 % of 2023 global revenues despite generic incumbency, because low production cost and once-daily dosing sustain high volume uptake in price-sensitive public formularies. Biological Drugs, currently led by Aducanumab and Lecanemab, command premium pricing ($20–25 k annually) tied to accelerated FDA pathways; although adoption is constrained by prescriber certification and routine PET requirements, the segment is forecast to add 5–6 pps to overall market CAGR through 2030 as confirmatory Phase IV evidence reduces payer resistance. The biological subset is further segmented into Monoclonal Antibodies (anti-amyloid, anti-tau) and Vaccines (active immunotherapies like ACI-35), with the former representing 92 % of biologic sales and the latter occupying early-stage development pipelines.