Quinine (Oral Route)

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Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur:

More common
  • Abdominal or stomach cramps or pain
  • Diarrhea
  • Nausea
  • Vomiting
Less common
  • Anxiety
  • Behavior change, similar to drunkenness
  • Black, tarry stools
  • Blood in urine or stools
  • Blurred vision
  • Cold sweats
  • Confusion
  • Convulsions (seizures) or coma
  • Cool pale skin
  • Cough or hoarseness
  • Difficulty in concentrating
  • Drowsiness
  • Excessive hunger
  • Fast heartbeat
  • Fever or chills
  • Headache
  • Lower back or side pain
  • Nervousness
  • Nightmares
  • Painful or difficult urination
  • Pinpoint red spots on skin
  • Restless sleep
  • Shakiness
  • Slurred speech
  • Sore throat
  • Unusual bleeding or bruising
  • Unusual tiredness or weakness
Rare
  • Difficulty in breathing and/or swallowing
  • Disturbed color perception
  • Double vision
  • Hives
  • Increased sweating
  • Muscle aches
  • Night blindness
  • Reddening of the skin, especially around ears
  • Ringing or buzzing in ears
  • Swelling of eyes, face, or inside of nose
Signs and symptoms of overdose
  • Blindness
  • Chest pain
  • Dizziness
  • Double vision
  • Fainting
  • Lightheadedness
  • Rapid or irregular heartbeat
  • Sleepiness

After you stop using this medicine, it may still produce some side effects that need attention. During this period of time, check with your doctor immediately if you notice the following side effects:

  • Blurred vision or change in vision

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

Precautions

DR601187

Portions of this document last updated:

Nov. 1, 2009

Source: Drug Information provided by: Micromedex

Copyright © 2009 Thomson Healthcare Inc. All rights reserved. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.


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