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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Which of the following opioid analgesic acts primarily through K opioid receptors?
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The correct answer is  (Ref: KDT 6/e p464, 465) Pentazocine can cause dysphoric reactions (hallucinations) by stimulating the K receptors.