Type segmentation classifies the market by pharmacological mechanism. Cholinesterase inhibitors (donepezil, rivastigmine, galantamine) dominate with roughly 55 % of revenue, owing to their long‑standing approval, generic availability, and broad indication for mild‑to‑moderate disease stages. NMDA‑receptor antagonists (memantine) hold about 25 % of the market, primarily used in moderate‑to‑severe cases and often combined with cholinesterase inhibitors, thereby generating incremental sales. Combination therapy products, which co‑formulate both mechanisms, capture an estimated 10 % as clinicians seek convenience and adherence benefits. Finally, investigational disease‑modifying agents—including anti‑amyloid antibodies and tau‑targeted therapies—represent the remaining 10 % of the market, reflecting early‑stage commercialisation and high pricing structures. This type‑based taxonomy clarifies how each drug class contributes to total market size, informs pricing dynamics, and highlights where pipeline activity may shift future revenue composition.