Safety Information

In clinical studies, the most common side effects with Thyrogen injections were:

  • Nausea
  • Headache
  • Fatigue
  • Vomiting
  • Dizziness
  • Lack of strength and/or energy

Patients treated with Thyrogen have also reported flu-like symptoms and allergic reactions (hypersensitivity).

Seek immediate medical attention if you experience any severe symptoms.1

What should I tell my doctor before receiving Thyrogen?

Tell your doctor if:

  • You are pregnant, planning to become pregnant or breastfeeding
  • You have or have had any problems with your kidneys.1

Is there any other important information I should know before receiving Thyrogen?

If you are over 65 years old, you should discuss the risks and benefits of Thyrogen with your physician if:

  • You have large amounts of leftover thyroid tissue after surgery.
  • You have a history of heart disease.

If you are at risk for complications from Thyrogen administration, you may receive your injections in hospital.

There have been reports of certain central nervous system problems in patients receiving Thyrogen. These include stroke in young women at a higher risk of stroke, and weakness on one side of the body. If you experience any of these symptoms after receiving Thyrogen, seek immediate medical attention.

Even with a Thyrogen-stimulated Tg test and whole body scan, a risk remains of missing a diagnosis of thyroid cancer or of underestimating the extent of disease.1 If you have any questions or concerns, you should talk with your doctor before or after receiving Thyrogen.

You should remain hydrated prior to treatment with Thyrogen.

Thyrogen is given into the buttock for 2 consecutive days. These injections are given by a health care provider. Please click here to download a copy of Thyrogen Administration Instruction Sheet.


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