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Antipsychotic Agents
A review of commonly prescribed first and second generation antipsychotic agents
46
Health Care
Professional
06/02/2011

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Term
First generation (typical) antipsychotics are better for treating [positive or negative] symptoms of schizophrenia.
Definition
Positive sx
Term
Which generation of antipsychotics poses a lesser risk for extrapyramidal symptoms?
Definition
Second generation (atypicals)
Term
Which of the following is the most likely to cause extrapyramidal symptoms: Chlorpromazine, Thioridazine, Fluphenazine, or Haloperidol?
Definition
Haloperidol
Term
Which of the following binds LEAST potently to the D2 receptor: Chlorpromazine, Thioridazine, Fluphenazine, or Haloperidol?
Definition
Chlorpromazine
Term
What is the maximum daily dose of haloperidol?
Definition
20 mg/day
Term
Haloperidol is metabolized by which CYP enzymes?
Definition
CYP3A4 and 2D6
Term
What is the dose conversion factor between oral haloperidol and haloperidol decanoate (IM injection)?
Definition
Dose conversion: 10-15x daily PO dose qMonth
Term
Which of the following agents is most likely to exhibit orthostasis: Thioridazine, Thiothixene, Fluephenazine, Haloperidol?
Definition
Thioridazine
Term
Thioridazine is not utilized as a first line agent because of: 1) Retrograde ejaculation, 2) Retinal pigmentary changes, 3) QT interval prolongation, 4) High anticholinergic effects, 5) All of the above
Definition
All of the above
Term
What drug may be given with Haldol or Thorazine to avoid extrapyramidal symptoms?
Definition
Benztropine (Cogentin)
Term
Which of the following is the first symptom of extrapyramidal symptoms: Acute dystonia, akathisia, pseudoparkinsonism, or tardive dyskinesia?
Definition
Acute dystonia
Term
What is the treatment of choice for acute dystonia?
Definition
Benztropine OR diphenhydramine
Term
What are the treatments of choice in patients with akathisia?
Definition
Propranolol OR lorazepam
Term
What are the treatments of choice for pseudoparkinsonism?
Definition
Benztropine OR trihexyphenidyl
Term
Drastic changes in mental status accompanied by elevated CPK levels are often indicative of what adverse effect antipsychotics?
Definition
Neuroleptic Malignant Syndrome
Term
Which of the following drugs is not appropriate for treatment of neuroleptic malignant syndrome: bromocriptine, dantrolene, or thiothixene?
Definition
Thiothixene
Term
Atypical antipsychotics carry a FDA class warning for:
Definition
Weight gain, hyperglycemia, new onset of DM
Term
Which of the following is the least likely to cause extrapyramidal symptoms: Risperidone, aripiprazole, olanzapine, ziprasidone, clozapine, or quetiapine?
Definition
Clozapine
Term
Clozapine has been given a black box warning for what adverse effects?
Definition
Agranulocytosis and seizure risk (higher doses)
Term
What is the maximum daily dose of clozapine?
Definition
900 mg/d
Term
What is the effect of concomitant use of phenytoin and clozapine?
Definition
Decreased clozapine levels (CYP induction by phenytoin)
Term
Concomitant use of carbamazepine and clozapine increases the likelihood of developing:
Definition
Agranulocytosis
Term
Concomitant use of clozapine and ciprofloxacin has what effect on clozapine?
Definition
Increases clozapine levels (Cipro = inhibitor)
Term
What is the effect of cigarette smoking on clozapine levels?
Definition
Decrease clozapine levels (1A2 induction by smoking)
Term
Which of the atypical antipsychotics is most likely to cause extrapyramidal symptoms?
Definition
Risperidone
Term
What is the brand name for IM risperidone?
Definition
Risperdal Consta
Term
What is the brand name of the long-acting IM olanzapine?
Definition
Zyprexa Relprevv
Term
Zyprexa Relprevv (olanzapine IM) has a warning for what?
Definition
Post-injection delirium/sedation syndrome (including coma)
Term
How should ziprasidone (Geodon) be administered orally?
Definition
With food --> increase bioavailability 2x
Term
Many facilities require this baseline test before prescribing Geodon:
Definition
EKG --> Geodon causes the longest QT prolongation among atypicals
Term
Paliperidone is the major active metabolite of which atypical antipsychotic?
Definition
Risperidone
Term
Oral hypoesthesia is a distinct ADR associated with which atypical antipsychotic?
Definition
Asenapine (Saphris)
Term
Which atypical antipsychotics are indicated for use in patients with autism?
Definition
Risperidone, aripiprazole
Term
Which two atypical antipsychotics are indicated for maintenance therapy for bipolar disorder?
Definition
Olanzapine, aripiprazole
Term
Which atypical antipsychotic is also approved as an adjunct in the treatment of major depressive disorder?
Definition
Aripiprazole
Term
Which atypical antipsychotic causes the least amount of weight gain, hyperlipidemia, and DM?
Definition
Ziprasidone
Term
Which atypical antipsychotic exhibits the most significant weight gain, hyperlipidemia, and DM?
Definition
Clozapine
Term
True or false: Weight gain associated with atypical antipsychotics is dose-related.
Definition
FALSE
Term
Which atypical antipsychotics are CYP1A2 substrates?
Definition
Olanzapine, Clozapine, Asenapine
Term
Which atypical antipsychotics are CYP2D6 substrates?
Definition
Risperidone, clozapine, olanzapine, aripiprazole, iloperidone
Term
Which atypical antipsychotics are CYP3A4 substrates?
Definition
Clozapine, quetiapine, ziprasidone, aripiprazole, iloperidone
Term
A patient currently being treated with Geodon for schizophrenia approaches your Target Pharmacy counter with a question, because after all, you're a Target pharmacist -- that's what you do. She asks about taking St. John's wort, because she saw an Oprah special on it. What do you tell her?
Definition
Do NOT take SJW, because it will decrease the effects of your Geodon (CYP3A4 induction).

In case you ever become a Target pharmacist, Pepto Bismol is pink because of the bismuth... Just saying'.
Term
Mr. Kingsford, one of your patients for many years, presents to your pharmacy counter with a new prescription for starting dose olanzapine. While waiting for his prescription, he tells you about this great new all charcoal grilled food diet he's been on for the past couple weeks, and that he enjoys nothing more than flipping a burger and smoking a Marlboro. After hearing this, you decide to call Mr. Kingsford's doctor to discuss the script with him. What should your conversation include?
Definition
Mr. Kingsford has been prescribed the lowest dose of Zyprexa, a CYP1A2 substrate. He informed me that he has been consistently eating charcoal grilled food and smokes cigarettes, both of which induce CYP1A2. Thus, he is likely to experience sub-therapeutic doses of Zyprexa and should be monitored closely for ineffective treatment.
Term
What pregnancy category is clozapine?
Definition
Category B
Term
All atypical antipsychotics are pregnancy category C, except:
Definition
Clozapine (B)
Term
All typical antipsychotics are pregnancy category ___.
Definition
C
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