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Demerol Oral

Generic Name: MEPERIDINE TABLET - ORAL
Pronounced: (meh-PAIR-id-een)

Demerol Oral Side Effects

Nausea, vomiting, constipation, dry mouth, flushing, sweating, lightheadedness, dizziness, and drowsiness may occur. If any of these effects persist or worsen, notify your doctor or pharmacist promptly.

To prevent constipation, maintain a diet adequate in fiber, drink plenty of water, and exercise. If you become constipated while using this drug, consult your pharmacist for help in selecting a laxative (e.g., stimulant-type with stool softener).

Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

  • slow/shallow breathing
  • fainting
  • slow/irregular/fast heartbeat
  • mental/mood changes (e.g., confusion, hallucinations, nervousness)
  • numbness
  • shakiness (tremors)
  • trouble urinating


Tell your doctor immediately if any of these rare but very serious side effects occur:

  • severe stomach/abdominal pain
  • seizures
  • change in the amount of urine


A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction:

  • rash
  • itching/swelling (especially of the face/tongue/throat)
  • severe dizziness
  • trouble breathing


This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

In the US -

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

In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.

Demerol Oral Precautions

Before taking meperidine, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this medicine, consult your doctor or pharmacist if you have:

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