About thyrotropin alfa
Recombinant human thyroid-stimulating hormone
Used for
- Helps detect remaining or recurrent thyroid cancer with thyroglobulin testing or imaging.
- Prepares patients for radioactive iodine treatment of differentiated thyroid cancer.
Usual adult dose
0.9 mg injected into a muscle on two consecutive days; radioactive iodine is usually given 24 hours after the second injection when indicated.
Common side effects
- Nausea
- Headache
- Fatigue
- Vomiting
Important warnings
- Use under specialist supervision; radioactive iodine procedures require appropriate precautions.
- Rarely, rapid tumor swelling can cause serious complications, especially with tumors near critical structures.
- Thyroid hormone withdrawal is not required, but thyroid hormone treatment usually continues.
- Severe hypersensitivity reactions have been reported.
Pregnancy
Not recommended during pregnancy because radioactive iodine used in treatment can harm the fetus.
Breastfeeding
Breastfeeding should be stopped before radioactive iodine treatment and resumed only when advised by the treating specialist.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.