THYROID SCAN MEDICATION LIST

You will need to stop taking several medications prior to the Thyroid Scan. Below is a list of the medications and the length of time you will need to stop taking them prior to your exam. Please consult your doctor before stopping any medication.

Thyroid Medications

  • Thyroxine (Synthroid, Levothyroid, Levoxyl): 2 weeks
  • Liothyronine (Cytomel, Thyrolar): 2 weeks

Iodide-Containing Drugs

  • SSKI, Lugol’s solution: 2 weeks
  • Amiodarone (Cordarone), benziodarone: 2 weeks
  • Iodoquinol (Diodoquin) (amebicide): 2 weeks
  • Expectorants - Calcidrine Syrup (CaI2), iodinated glycerol, hydriodic acid syrup: 2 weeks
  • Echothiopate iodide (ophthalmic): 2 weeks
  • Isopropamide iodide (anticholinergic): 2 weeks
  • Vitamin and mineral products: 2 weeks

Other Drugs

  • Phenylbutazone (apo-Phenylbutazone): 1 week
  • Sulfonamides (Septra [DS], Apo-Sulfatrim, Novo-Trimel [DS] , Nu-Cotrimox, Coptin, Pediazole): 2 weeks
  • Adrenal and gonadal steroids: 2 weeks
  • ACTH (Cortrosyn, Synacthen Depot): 2 weeks

Topical Iodide Products

  • Iodochlorhydroxyquin (Clioquinol): 1 – 9 months
  • Iodine tincture: 2 weeks
  • Povidone iodine: 2 weeks
  • Iodoform gauze: 2 weeks

X-Ray or CT Dye (Contrast Media)

  • Hypaque Meglumine, Hypaque Sodium (Winthrop): 4 weeks
  • Lipiodol, Ethiodol (Fougera): 1 year or more
  • Cholografin Meglumine (Bracco): 3 months
  • Telepaque (Nycomed): 2 months