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Patients and caregivers should be advised that the effect of Cognex® (brand of tacrine hydrochloride) therapy is thought to depend upon its administration at regular intervals, as directed.
The caregiver should be advised about the possibility of adverse effects. Two types should be distinguished: (1) those occurring in close temporal association with the initiation of treatment or an increase in dose (eg, nausea, vomiting, loose stools, diarrhea, etc) and (2) those with a delayed onset (eg, rash, jaundice, changes in the color of stool-black, very dark or light [ie, acholic]).
Patients and caregivers should be encouraged to inform the physician about the emergence of new events or any increase in the severity of existing adverse clinical events. Caregivers should be advised that abrupt discontinuation of Cognex® (tacrine) or a large reduction in total daily dose (80 mg/day or more) may cause a decline in cognitive func-t ion and behavioral disturbances. Unsupervised increases in the dose of tacrine may also have serious consequences. Consequently, changes in dose should not be undertaken in the absence of direct instruction of a physician.
Last reviewed on RxList: 6/24/2008
This monograph has been modified to include the generic and brand name in many instances.
Additional Cognex Information
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