The article you requested is

High-Dose Cholinergic Therapy With Rivastigmine Patch Does Not Prolong QTc Time in Patients With Alzheimer’s Disease

J Clin Psychiatry 2014;75(3):288 [letter]

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Cholinesterase inhibitors are widely accepted as established therapeutic intervention across the entire severity spectrum of Alzheimer’s disease. However, fear of increased corrected QT interval (QTc) time is one of the main reasons for nonprescription of cholinergic drugs. While it is generally accepted that therapeutic efficacy of cholinergic therapy is dose dependent, a large number of patients are treated with a low dose for fear of dose-dependent increase of QTc time.