Naltrexone HCL Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • A Skin Rash
  • A Type Of Allergic Reaction Called Angioedema
  • Inflammation Of The Skin Due To An Allergy

If experienced, these tend to have a Less Severe expression

  • Anxious Feelings
  • Difficulty Sleeping
  • Head Pain
  • Joint Pain
  • Low Energy
  • Muscle Pain
  • Nausea
  • Stomach Cramps
  • Vomiting

INFREQUENT side effects


If experienced, these tend to have a Less Severe expression

  • A Change In Pulse
  • A Sore Throat
  • Chills
  • Constipation
  • Cough
  • Decreased Appetite
  • Diarrhea
  • Dizziness
  • Excessive Thirst
  • Fast Heartbeat
  • Hoarseness
  • Inflammation Of The Tissue Lining The Sinuses
  • Irritability
  • Nervousness
  • Runny Nose
  • Sneezing
  • Stuffy Nose

RARE side effects


If experienced, these tend to have a Severe expression

  • Abnormal Liver Function Tests
  • An Earache
  • An Increased Need To Urinate Often
  • Blurred Vision
  • Confusion
  • Damage To The Liver And Inflammation
  • Depression
  • Difficult Or Painful Urination
  • Eye Inflammation
  • Eye Irritation
  • Eye Pain
  • Fever
  • Hallucinations
  • High Blood Pressure
  • Inflammation Of A Vein
  • Itching
  • Low Platelet Count And Bleeding From Immune Response
  • Mental Status Changes
  • Mood Changes
  • Nosebleed
  • Ringing In The Ears
  • Stomach Or Intestinal Ulcer
  • Suicidal Thoughts
  • Swollen Lymph Nodes
  • Trouble Breathing

If experienced, these tend to have a Less Severe expression

  • Drowsiness
  • Muscle Tremors
  • The Inability To Have An Erection
  • 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.