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Aricept and Insomnia: What Users Say

Insomnia: mentioned by 4 users (8.3%)

Based on user experiences from 48 Aricept reviews, the following table shows the most commonly mentioned side effects.

All user comments are moderated by Drugs.com. Each review is verified for relevance and screened for inappropriate content. Side effects are user-reported and not clinically verified.

vivid dreams 16.7%
diarrhea 14.6%
confusion 10.4%
insomnia 8.3%
constipation 6.3%
cramps 6.3%
hallucinations 6.3%
headaches 6.3%

Reviews for Aricept

Showing 4 reviews tagged with "insomnia". Clear filters to view all 48 reviews.
Commonly mentioned side effects
  • Den...
  • November 24, 2007

For Alzheimer's Disease "My father has been on Aricept for 6 weeks and has become delusional especially at night. My mother stopped the medication because he wasn't sleeping at all at night and thus neither was she. I don't see this listed as a side effect and don't know if the change in my father's behavior is related to the Aricept or just increasing severity of his dementia. Will have to wait and see if things get better now that he's off the drug."

5 / 10
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193 Report
  • jus...
  • Taken for 1 to 6 months
  • January 21, 2023

For Alzheimer's Disease "The neurologist prescribed Namenda. Too many side effects. Went on Aricept and was more confused, diarrhea, stomach cramps, resting heartbeat 90, couldn't sleep. Excessive crying was frightening. No reason to cry. I came home one night and was planning a suicide attempt, crying and exhausted. I stopped taking it immediately. I have never had a thought about suicide. Very frightening. I'm a 66-year-old woman with dementia. I did not experience anything positive with this medication."

1 / 10
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23 Report
  • sen...
  • Taken for 6 months to 1 year
  • February 26, 2025

"Trouble sleeping resulting in headaches caused by 'abnormal' dreams listed in less common side effects. For me, the better definition is intense dreams, awaking with a headache and difficulty sleeping thereafter."

6 / 10
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0 Report

Frequently asked questions

  • SKC...
  • October 26, 2015

For Alzheimer's Disease "Trouble sleeping, stomach pain, headache, constipation, fever,"

1 / 10
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76 Report

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Reviews may be edited to correct grammar/spelling or remove inappropriate content. Reviews appearing to come from parties with a vested interest are not published. This information is not intended to endorse any medication and should not replace the expertise and judgment of healthcare professionals.