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What are the side effects of pentazocine and naloxone?

Common side effects of pentazocine and naloxone include: constipation, diarrhea, stomach upset, throwing up, difficulty eating, headaches, sweating, difficulty sleeping and weakness. Call your doctor if any of these side effects becomes severe or will not go away. Call your doctor right away if you experience any of these serious side effects: an allergic reaction (swelling, hives, itching, rash, trouble breathing, chest tightness), ringing in your ears, blurry vision, warmth or redness under your skin, difficulty focusing or blurred vision, confusion, fainting, changes in mood, hallucinations, anxiety, feeling faint, unusual behavior or thoughts, difficulty breathing or shallow breathing, urinating less frequently, irregular heartbeat, tremors, seizures or if your skin is clammy, cold, bleeding or peeling.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.