摘要: During the last decade, a systematic effort to develop pharmacological treatment for Alzheimer disease (AD) has resulted into three drugs being registered first time in USA and Europe this specific indication. All are cholinesterase inhibitors (ChEI). The major therapeutic effect of ChEI on AD patients is maintain cognitive function at constant level during 6 months one year period as compared placebo. Additional drug effects might be slowing deterioration improving behavioral daily living conditions. Comparison clinical demonstrates rather similar magnitude improvement measures. For some drugs, may represent an upper limit while other it still possible increase further benefit. In order maximize prolong positive important start early adjust dosage treatment. Recent studies show that many stabilization produced by can prolonged long 24 month period. explain stabilizing ChEI, mechanism than AChE inhibition, based beta-amyloid metabolism, postulated.