The patient was receiving haloperidol (Haldol), a dopamine antagonist. The psychiatrist changed the order to aripiprazole (Abilify), a partial dopamine antagonist. Which statement best describes the effect of the change of medication on the patient?
1. The patient is more compliant in taking his medication.
2. The patient experiences greater efficacy.
3. The patient experiences a greater reduction in symptoms.
4. The patient experiences fewer side effects.
Correct Answer: 4
Rationale: Partial blocking of dopamine results in fewer side effects than complete blocking of dopamine. The patient will not necessarily experience greater efficacy or be more compliant in taking the medicine. Experiencing a greater reduction in symptoms is the same as greater efficacy.
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