DEMEROL Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Severe expression i

  • low blood pressure
  • temporary redness of face and neck

If experienced, these tend to have a Less Severe expression i

  • constipation
  • drowsiness
  • inducing of a relaxed easy state
  • fainting
  • dizziness
  • nausea
  • vomiting
  • generalized weakness

INFREQUENT side effects

If experienced, these tend to have a Severe expression i

  • confusion
  • slow heartbeat
  • orthostatic hypotension, a form of low blood pressure
  • vocal cord swelling
  • a spasm of the larynx
  • a complete or partial collapse of the lung airways called atelectasis
  • decreased lung function
  • bronchospasm
  • seizures
  • trouble breathing
  • involuntary muscle movements
  • fast heartbeat

If experienced, these tend to have a Less Severe expression i

  • false sense of well-being
  • nightmares
  • agitation
  • double vision
  • blurred vision
  • a change in vision
  • dry mouth
  • irritation of the stomach or intestines
  • spasm of a bile duct tract
  • a spasm of the ureter
  • excessive sweating
  • headache
  • heart throbbing or pounding
  • an inability to completely empty the bladder
  • feelings of dissatisfaction, sadness, and unease

RARE side effects

If experienced, these tend to have a Severe expression i

  • decreased function of the adrenal gland
  • deficiency of a substance that promotes masculinization
  • addiction to a drug
  • serotonin syndrome, a type of disorder with high serotonin levels
  • complete stoppage of the heart
  • lung failure causing loss of breath
  • inflammation of the skin due to an allergy
  • itching
  • hives
  • hallucinations
  • a tonic-clonic seizure
  • a skin rash
  • a condition where the body is unable to maintain adequate blood flow called shock
  • a significant type of allergic reaction called anaphylaxis

If experienced, these tend to have a Less Severe expression i

  • widening of blood vessels
  • the inability to have an erection
  • delirium
  • muscle tremors
  • muscle twitching
  • inflammation of the vein, or phlebitis after infusion

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Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.