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Clozapine and Drowsiness: What Users Say

Brand names: Clozaril, Clopine, Clozapine Synthon, Denzapine Versacloz

Drowsiness: mentioned by 4 users (5.1%)

Based on user experiences from 78 Clozapine 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.

weight gain 25.6%
constipation 7.7%
hallucinations 7.7%
drooling 6.4%
drowsiness 5.1%
depression 3.8%
fatigue 3.8%
memory loss 3.8%

Reviews for Clozapine

Commonly mentioned side effects
  • Dmo...
  • Taken for 1 to 2 years
  • November 10, 2018

For Schizophrenia "My son started showing signs of psychosis right after his 14th birthday. Diagnosed with schizophrenia 6 months later. He was in a constant state of his own reality and heard voices on a regular basis. Seroquel, Zyprexa, Invega, and Abilify did nothing for him. His psychiatrist prescribed Clozapine as a last resort. I won't allow his dosage any higher than 300 mg per day for now since the side effects worry me. This drug has been a lifesaver to allow him to participate in the regular world and quiet the voices where he can focus on real people. It makes him drowsy, so he takes it at night. Weight gain is significant, but most antipsychotics will do this. Regular blood monitoring to make sure his WBC stays normal. So good, so far."

8 / 10
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53 Report
  • Flo...
  • Taken for 6 months to 1 year
  • September 3, 2021

Clozapine for Schizophrenia "Clozaril (Clozapine) is the best antipsychotic I’ve ever tried (and I’ve tried many other medications). It lessened my symptoms, and now I’m functioning better. I had drooling at night, constipation, sedation. I take Senokot for the constipation, a medication to lessen the drooling (though I don’t use it), and I take the majority of my Clozapine at night to deal with the sedation."

8 / 10
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31 Report
  • ABC...
  • July 15, 2015

For Schizophrenia "Very drowsy during the daytime. Not sure if my antidepressant needs to be changed, but it is still too early to judge how well Clozaril is working. I'd rather not have to draw my blood every week, because there is a lot I could be doing, like going overseas with friends and relatives. By the way, does anyone experience bedwetting in the morning?"

9 / 10
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42 Report
  • A F...
  • Taken for less than 1 month
  • March 28, 2021

For Schizophrenia "Avoid taking it with alcohol, causes extreme drowsiness, trouble breathing, spinning head, unresponsiveness to the point the person could not call an ambulance himself if he was alone. This drug has serious side effects."

1 / 10
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13 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.