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Westhroid Side Effects

While most people have no problems with Westhroid, side effects can occur -- usually when too much is taken. Side effects that may indicate that your dosage needs to be decreased include fever, difficult or painful breathing, insomnia, and high blood pressure. Side effects of Westhroid that may be signs of an allergic reaction include itching, hives, and an unexplained rash.

An Introduction to Westhroid Side Effects

As with any medicine, side effects are possible with Westhroid™ (thyroid USP). However, not everyone who takes the drug will experience side effects. In fact, most people tolerate it quite well.
(This article covers many, but not all, of the possible side effects with Westhroid. Your healthcare provider can discuss a more complete list of Westhroid side effects with you.)

Possible Westhroid Side Effects

Side effects typically occur when the Westhroid dosage is too high. Too much Westhroid causes symptoms of an overactive thyroid (known as hyperthyroidism). These symptoms can be dangerous, and any of these symptoms should be reported to your healthcare provider, as they may signal that your dosage needs to be decreased. These side effects may include:
  • Heart palpitations
  • A rapid heart rate (tachycardia)
  • Heart failure, chest pain, or a heart attack
  • Difficult or painful breathing
  • Shakiness or muscle weakness
  • Feeling hot all the time and increased sweating
  • Fever
  • Hyperactivity, nervousness, anxiety, or irritability
  • Insomnia
  • Emotional changes
  • Hair loss
  • Flushing or hot flashes
  • Easily broken bones or other signs of weakened bones
  • An increased appetite, along with weight loss
  • Menstrual problems or fertility problems
  • High blood pressure (hypertension)
  • Diarrhea, vomiting, or abdominal cramps (stomach cramps)
  • Seizures.
As with any medication, Westhroid can also cause allergic reactions. In fact, it may have a higher risk for allergic reactions, since it contains ground-up pig thyroid glands. Seek medical attention immediately if you develop signs of an allergic reaction, including:
  • An unexplained rash
  • Hives
  • Itching
  • Wheezing or difficulty breathing
  • Unexplained swelling (especially of the lips, mouth, or throat).
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Westhroid Thyroid Medication

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