Side Effects of Euthyrox

Euthyrox is a thyroid medication that is used to replace a hormone that is usually naturally produced by the thyroid gland to regulate the body’s metabolism and energy. Euthyrox is a man made version of the natural hormone called thyrozine. In this article, we will discuss what euthyrox is used for, side effects of euthyrox as well as cost.

Euthyrox is used to treat hypothyroidism which is when the thyroid does not produce enough of hormones to properly function. Euthyrox can also be used to treat or prevent an enlarged thyroid gland which can be caused by radiation treatment, surgery, cancer or hormone imbalances.

Levothyroxine is the generic version of brand name Euthyrox. This drug can also be found under other names such as:

  • Levothroid
  • Levoxyl
  • Synthroid
  • Tirosint
  • Unithroid

While typically switching between a generic and brand name drug is not an issue, there have been some negative experiences and side effects of euthyrox reported by those who switched to the generic levothyroxine from a brand name. Consult your healthcare professional to determine if switching may be a problem or to properly discuss the various contradictory information available about the generic vs brand name versions of this medication. Some issues that occurred where: dry skin, body aches, numbness or tingling in hands, or fatigue. Pre-existing health conditions may make some individuals not suitable for the generic brand of this medication.

The American Thyroid Association recommends taking the same brand or generic version of this medication throughout treatment. Thyroid disease may require lifelong therapy and is best treated with consistent and precise treatment with the same medication.

This medication comes in a variety of forms such as a liquid filled capsule, solution as well as tablet.


The information included in this page is not a substitute for medical advice. The list of side effects may not include all side effects as drugs can affect all people differently. Any dosage information may not include all dosage information. It is important to discuss with a medical professional that knows your medical history well which dosage is right for you and if there are any potential risks or possible side effects. Our goal is to provide relevant information but this page may not include all up-to-date information.


Euthyrox cannot be used if you have certain medical conditions such as untreated or uncontrolled adrenal gland disorder, a thyroid disorder called thyrotoxicosis, or have had any recent or current symptoms of a heart attack.

Side Effects of Euthyrox

If you have an allergic reaction to this medication, you should get emergency help immediately. Some indications are hives, difficulty breathing, swelling of face, lips, tongue or throat

Call your doctor at once if you also experience any of these side effects of euthyrox:

  • fast or irregular heartbeats
  • fever, hot flashes, sweating
  • chest pain, pain spreading to your jaw or shoulder
  • shortness of breath
  • headache, leg cramps, muscle aches
  • tremors, or if you feel unusually cold
  • memory problems
  • feeling depressed or irritable or nervousness
  • irregular menstrual periods
  • dryness of skin or hair, hair loss
  • vomiting, diarrhea, appetite changes, weight changes

Common side effects of euthyrox include but are not limited to:

  • increased appetite
  • shortness of breath
  • chest pain, irregular heart beats
  • changes in menstrual periods
  • diarrhea
  • skin rash, partial hair loss
  • weight loss
  • feeling hot
  • headache, leg cramps, muscle pain or weakness
  • tremors
  • feeling nervous or irritable
  • difficulty sleeping

Cost of Euthyrox

The cost of this medication depends on health plan coverage as well as the drug prescribed. You or your doctor can use eNavvi to determine which version of this drug is within coverage and if there are any prior authorizations or step-therapy requirements.

Leave a Comment

Your email address will not be published.