危険ドラッグ(α–pyrrolidinohexiophenone)の経直腸投与により多臓器不全となった1例(Multiple organ failure associated with the rectal use of α–pyrrolidinohexiophenone (α–PHP): a case report)

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Risperidone, sold under the brand name Risperdal among others, is an atypical antipsychotic. It is used to treat schizophrenia, bipolar disorder, and irritability associated with autism. It is taken either by mouth or by injection into a muscle. The injectable version is long-acting and lasts for about two weeks.