How are antipsychotic agents administered in the treatment of schizophrenia?

Updated: Mar 16, 2018
  • Author: Frances R Frankenburg, MD; Chief Editor: Glen L Xiong, MD  more...
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The conventional antipsychotic agents are available in generic forms and are less expensive than the newer agents. They are available in a variety of vehicles, including liquid and intramuscular (IM) preparations. Some of these agents (haloperidol and fluphenazine) are also available as depot preparations, meaning that a person can be given an injection of a medication every 2-4 weeks. Of the second-generation agents, risperidone is available as a long-acting injection that uses biodegradable polymers; olanzapine, paliperidone, and aripiprazole are also now available in long-acting injectable forms. [79, 80, 81, 82]

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