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Paral Side Effects

Generic Name: paraldehyde

Note: This document contains side effect information about paraldehyde. Some of the dosage forms listed on this page may not apply to the brand name Paral.

Applies to paraldehyde: injectable, liquid, solution

Along with its needed effects, paraldehyde (the active ingredient contained in Paral) 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 as soon as possible if any of the following side effects occur while taking paraldehyde:

More common
  • Coughing (with injection only)
  • skin rash
Less common
  • Redness, swelling, or pain at injection site
With long-term use
  • Yellow eyes or skin
Symptoms of overdose
  • Cloudy urine
  • confusion
  • decreased urination
  • fast and deep breathing
  • muscle tremors
  • nausea or vomiting (continuing or severe)
  • nervousness, restlessness, or irritability
  • shortness of breath or slow or troubled breathing
  • slow heartbeat
  • stomach cramps (severe)
  • weakness (severe)

Some side effects of paraldehyde may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common
  • Drowsiness
  • nausea or vomiting (when taken by mouth)
  • stomach pain (when taken by mouth)
  • unpleasant breath odor
Less common
  • Clumsiness or unsteadiness
  • dizziness
  • ``hangover'' effect

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:

  • Convulsions (seizures)
  • hallucinations (seeing, hearing, or feeling things that are not there)
  • increased sweating
  • muscle cramps
  • nausea and vomiting
  • stomach cramps
  • trembling

Paraldehyde will cause your breath to have a strong unpleasant odor. This effect will last until about one day after you have stopped using this medicine.

Some side effects of Paral may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.