Naltrexone HCL Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • Giant Hives
  • Inflammation Of Skin Caused By An Allergy
  • Rash

If experienced, these tend to have a Less Severe expression

  • Chronic Trouble Sleeping
  • Feel Like Throwing Up
  • Feeling Anxious
  • Head Pain
  • Joint Pain
  • Low Energy
  • Muscle Pain
  • Stomach Cramps
  • Throwing Up

INFREQUENT side effects


If experienced, these tend to have a Less Severe expression

  • Change In Pulse
  • Chills
  • Constipation
  • Cough
  • Diarrhea
  • Dizzy
  • Easily Angered Or Annoyed
  • Excessive Thirst
  • Fast Heartbeat
  • Hoarseness
  • Loss Of Appetite
  • Nervous
  • Runny Nose
  • Sinus Irritation And Congestion
  • Sneezing
  • Sore Throat
  • Stuffy Nose

RARE side effects


If experienced, these tend to have a Severe expression

  • Abnormal Liver Function Tests
  • Altered Mental Status
  • Blurred Vision
  • Confused
  • Depression
  • Difficult Or Painful Urination
  • Earache
  • Eye Irritation
  • Fever
  • Frequent Urination
  • Hallucination
  • Having Thoughts Of Suicide
  • Hepatitis Caused By Drugs
  • High Blood Pressure
  • Inflammation Of A Vein
  • Inflammation Of The Eye
  • Itching
  • Low Platelet Count And Bleeding From Immune Response
  • Mood Changes
  • Nosebleed
  • Pain In The Eye
  • Ringing In The Ears
  • Stomach Or Intestinal Ulcer
  • Swollen Lymph Nodes
  • Trouble Breathing

If experienced, these tend to have a Less Severe expression

  • Drowsiness
  • Inability To Have An Erection
  • Shaking Extremities
  • Twitching

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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.