Before Using

Drug information provided by: Merative, Micromedex®

In deciding to use a diagnostic test, any risks of the test must be weighed against the good it will do. This is a decision you and your doctor will make. Also, other things may affect test results. For this test, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of iohexol in children.

Geriatric

Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of iohexol in the elderly. However, elderly patients are more likely to have unwanted side effects (eg, liver, kidney, or heart problems) which may require caution and an adjustment in the dose for patients receiving iohexol.

Breastfeeding

Studies in women suggest that this medication poses minimal risk to the infant when used during breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are receiving this diagnostic test, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Receiving this diagnostic test with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Acebutolol
  • Amiodarone
  • Atenolol
  • Betaxolol
  • Bisoprolol
  • Carteolol
  • Carvedilol
  • Celiprolol
  • Esmolol
  • Labetalol
  • Levobunolol
  • Metformin
  • Metipranolol
  • Metoprolol
  • Nadolol
  • Nebivolol
  • Oxprenolol
  • Penbutolol
  • Pindolol
  • Practolol
  • Propranolol
  • Sotalol
  • Timolol

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this diagnostic test. Make sure you tell your doctor if you have any other medical problems, especially:

  • Alcohol abuse or
  • Heart or blood vessel disease or
  • Hypertension (high blood pressure) or
  • Hyperthyroidism (overactive thyroid) or
  • Kidney disease, severe or
  • Liver disease or
  • Pheochromocytoma (adrenal problem) or
  • Sickle cell anemia (inherited blood disorder)—Use with caution. May make these conditions worse.
  • Allergy to a contrast agent, history of or
  • Asthma—Use with caution. May increase risk of having allergic reactions.
  • Congestive heart failure or
  • Dehydration or
  • Diabetes or
  • Kidney disease or
  • Multiple myeloma (cancer of plasma cells) or
  • Paraproteinemia (high amount of paraprotein in the blood)—May increase risk of having kidney failure.

Portions of this document last updated: Feb. 01, 2024

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