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What are the side effects of clonazepam?

Clonazepam may or may not cause the following side effects in you. Look for any of these symptoms, and tell your doctor if they become a problem or do not go away:

  • Drowsiness and/or dizziness
  • Unsteadiness or lack of coordination while taking clonazepam
  • Difficulty thinking or recalling memories
  • An increase in saliva
  • Joint or muscle pain
  • Urinating frequently
  • Blurry vision
  • A change in your sex drive or ability


Clonazepam has been reported to have some serious but rare side effects. If any of these happen to you, call your doctor or seek medical attention:

  • Rash, hives, swelling of the eyes, face, lips, tongue or throat
  • Difficulty swallowing or breathing
  • Hoarse voice

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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.