Final answer:
The adverse effect that needs to be notified to the healthcare professional (HCP) for a client taking donepezil (Aricept) for Alzheimer's disease (AD) is hallucinations.
The correct answer is Option 4: Hallucinations
Step-by-step explanation:
The adverse effect that needs to be notified to the healthcare professional (HCP) for a client taking donepezil (Aricept) for Alzheimer's disease (AD) is hallucinations. Donepezil is a medication commonly used to treat AD, but it can cause various side effects. Hallucinations, which involve seeing or hearing things that are not actually there, can be a serious and potentially dangerous side effect that should be reported to the HCP immediately.