Cholinesterase inhibitors (ChEI) represent the drug of choice for Alzh
eimer's disease (AD) treatment. They produce significant improvement o
n cognitive as well as non-cognitive function for a period up to 1 yea
r during the first 3 years following clinical diagnosis. The magnitude
of cognitive improvements is similar for different ChEI, however, dif
ferences are seen with regard to incidence and severity of side effect
s, optimal ChE inhibition, pharmacokinetic properties and mode of admi
nistration. ((C)Elsevier, Paris).