risperidone

noun

ris·​per·​i·​done ri-ˈsper-ə-ˌdōn How to pronounce risperidone (audio)
: an antipsychotic drug C28H27FN4O2 used especially to treat schizophrenia

Examples of risperidone in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Tardive dyskinesia is a fairly common side effect for patients taking Zyprexa and Risperdal (risperidone). — Joshua P. Cohen, Forbes, 5 Nov. 2024 Maguire has successfully tested risperidone, olanzapine and lurasidone, all of which reduced the severity of stuttering, although none has received approval from the Food and Drug Administration. — Lydia Denworth, Scientific American, 1 Aug. 2021

Word History

Etymology

perhaps from fluor- + is- + piperidine + -one

First Known Use

1988, in the meaning defined above

Time Traveler
The first known use of risperidone was in 1988

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risperidone
rispetto
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Cite this Entry

“Risperidone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/risperidone. Accessed 29 Apr. 2025.

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Medical Definition

risperidone

noun
ris·​per·​i·​done ri-ˈsper-ə-ˌdōn How to pronounce risperidone (audio)
: an antipsychotic drug C28H27FN4O2 that is used especially to treat schizophrenia, acute manic episodes of bipolar disorder, and irritability associated with autism in children and adolescents

Note: Risperidone's exact mechanism of action is unknown, but it is noted for its affinity for certain serotonin, dopamine, alpha-adrenergic, and histamine receptors in the brain. It is marketed under the trademark Risperdal.

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