Levothyroxine SODIUM Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Infertility In Women

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Decreased Calcification Or Density Of Bone

If experienced, these tend to have a Less Severe expression

  • High Blood Pressure
  • Weight Loss

RARE side effects


If experienced, these tend to have a Severe expression

  • A Heart Attack
  • A Skin Rash
  • A Type Of Allergic Reaction Called Angioedema
  • Abnormal Heart Rhythm
  • Abnormal Liver Function Tests
  • Angina, A Type Of Chest Pain
  • Complete Stoppage Of The Heart
  • Fast Heartbeat
  • Heart Failure
  • Hives
  • Mood Changes
  • Pseudotumor Cerebri, A Condition With High Fluid Pressure In The Brain
  • Seizures
  • Trouble Breathing

If experienced, these tend to have a Less Severe expression

  • A Problem With Menstrual Periods
  • Anxious Feelings
  • Chest Pain
  • Diarrhea
  • Difficulty Sleeping
  • Excessive Sweating
  • Fever
  • Hair Loss
  • Headache
  • Heart Throbbing Or Pounding
  • Heat Intolerance
  • Increased Hunger
  • Increased Pulse Rate
  • Irregular Periods
  • Irritability
  • Low Energy
  • Muscle Spasm
  • Muscle Tremors
  • Muscle Weakness
  • Nervousness
  • Stomach Cramps
  • Temporary Redness Of Face And Neck
  • Vomiting

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.