What are the side effects of pentazocine and acetaminophen?

Possible side effects of pentazocine and acetaminophen include:

  • signs of allergic reaction (swelling, hives and difficulty breathing)
  • an abnormally fast or slow heartbeat
  • shallow breathing
  • fainting
  • lightheadedness
  • blurred vision or other vision problems
  • tremors
  • severe dizziness and weakness
  • seizures
  • confusion
  • unusual thoughts or actions
  • stomach upset or pain
  • jaundice
  • difficulty eating
  • dark urine and stools the color of clay
  • skin that is blistering or red or swollen
  • bleeding and bruising that is abnormal or happens easier than usual

Call your doctor right away if you experience any of these side effects. Mild side effects include:

  • dizziness
  • drowsiness
  • headaches
  • lightheadedness
  • stomach upset
  • throwing up
  • diarrhea
  • constipation that is not severe
  • sweating
  • dry mouth

See your doctor if these become bothersome or will not go away.

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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.