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RisperidoneAka: Risperdal

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  1. Class
    1. Atypical Antipsychotic (Second Generation agent)
    2. Neuroleptic
  2. Adverse Effects
    1. Insomnia
    2. Hypotension
    3. Weight gain
    4. Extrapyramidal Side Effects
      1. Low risk when daily dose under 10 mg
    5. Peristent Tardive Dyskinesia
      1. Lower Incidence than with other Neuroleptics
    6. Exacerbates Parkinson's Disease movement
  3. Dosing
    1. Initial
      1. Adult: 1 mg PO bid
      2. Elderly: 0.25 mg qd to 0.5 mg PO bid
    2. Slow titration to average dosing
      1. Adult: 2 to 4 mg PO daily (or divided bid)
      2. Elderly with Dementia: 0.5 to 0.75 mg PO bid
    3. Maximum: 16 mg/day
  4. Monitoring
    1. See Antipsychotics
    2. Consider EKG, electrolyte and magnesium monitoring due to QT Interval prolongation risk
  5. Drug Interactions
    1. Metabolized by Cytochrome P450 2D6
    2. Increase Antipsychotic levels (toxicity risk): Monitor for toxicity
      1. Clozapine
      2. Fluoxetine
      3. Paroxetine
    3. Decrease Antipsychotic levels (lower efficacy)
      1. Barbiturates
      2. Carbamazepine
      3. Phenytoin
      4. Rifampin
    4. Other effects
      1. Increased antihypertensive effect (may result in hypotension)
      2. Raises Prolactin levels
      3. Avoid concurrent use of other medications prolonging QT Interval
        1. See Prolonged QT Interval due to Medication
  6. References
    1. Jeste (2000) Am J Psychiatry 157:1150
    2. Motsinger (2003) Am Fam Physician 67(11):2335

Risperidone (C0073393)

Definition (CSP)selective blocker of dopamine D2 and serotonin-5-HT2 receptors that acts as an atypical antipsychotic agent; has been shown to improve both positive and negative symptoms in the treatment of schizophrenia.
Definition (MSH)A selective blocker of DOPAMINE D2 RECEPTORS and SEROTONIN 5-HT2 RECEPTORS that acts as an atypical antipsychotic agent. It has been shown to improve both positive and negative symptoms in the treatment of SCHIZOPHRENIA.
Definition (NCI)A benzisoxazole derivative with antipsychotic property. Risperidone selectively antagonizes serotonin (5-HT) effects via cortical 5-HT2 receptor, and, to a lesser extent, competes with dopamine at the limbic dopamine D2 receptor. The antagonism leads to decreased psychotic effects, such as hallucinations and delusions. In addition, risperidone has low to moderate affinity for histamine H1, 5-HT1A, 5-HT1C, and 5-HT1D receptors, while it has weak affinity for dopamine D1 and haloperidol-sensitive sigma site receptors.
ConceptsOrganic Chemical (T109) , Pharmacologic Substance (T121)
MSHD018967
EnglishRisperidone, RISPERIDONE PREPARATION
Spanishrisperidona
Parent ConceptsPyrimidinones (C0034290), Antipsychotic Agents (C0040615), [CN709] ANTIPSYCHOTICS, OTHER (C0973508), Benzisoxazole derivative antipsychotic agent (C1268910), Drug allergen (C1320237), Non-phenothiazines/ Atypicals (C1579416)
SourcesAOD, CSP, LNC, MSH, MTHSPL, NCI, NDFRT, RXNORM, SCTSPA, SNOMEDCT, USPMG, VANDF
Derived from the NIH UMLS (Unified Medical Language System)


Risperdal (C0592071)

ConceptsOrganic Chemical (T109) , Pharmacologic Substance (T121)
EnglishRisperdal
SourcesRXNORM
Derived from the NIH UMLS (Unified Medical Language System)



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