Skip to main content

Iobenguane I 131 (Injection)

Iobenguane I 131 (eye-oh-BEN-gwane I 131 )

Given during a test for certain types of tumors, such as pheochromocytoma and neuroblastoma. This medicine helps tumors show more clearly on a scan or x-ray.

Brand Name(s):

There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

You should not receive this medicine if you have had an allergic reaction to iobenguane sulfate or iodine.

How to Use This Medicine:


  • Your doctor will prescribe your dose and schedule. This medicine is given through a needle placed in a vein.
  • A nurse or other health provider will give you this medicine.

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Make sure your doctor knows if you are using blood pressure medicine such as labetalol (Trandate®), reserpine (Serpalan®), diltiazem, nifedipine, verapamil, Cartia®, Lotrel®, Norvasc®, Plendil®, or Tiazac®. Tell your doctor if you are using medicine such as cocaine, phenylephrine, pseudoephedrine (Sudafed®), or ephedrine.
  • Make sure your doctor knows if you are also using medicine to treat depression such as amitriptyline, nortriptyline, doxepin, amoxapine, loxapine, Elavil®, Loxitane®, Pamelor®, or Sinequan®.

Warnings While Using This Medicine:

  • Make sure your doctor knows if you are pregnant or breast feeding.
  • Make sure your doctor knows if you have kidney disease, high blood pressure, or thyroid problems.

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Fever or chills.
  • Lightheadedness or fainting.
  • Nausea or vomiting.

If you notice these less serious side effects, talk with your doctor:

  • drowsiness

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088

Last Updated: 11/4/2014
The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites.
Copyright © 1984- Truven Health Analytics. All rights reserved.

Thomson & A.D.A.M