Last updated on RxList: 11/9/2018
Omniscan Side Effects Center

Last reviewed on RxList 11/9/2018

Omniscan (gadodiamide) injection is a magnetic resonance imaging (MRI) contrast agent that helps doctors see images of the brain, spine, chest, stomach, hip area, and other parts of the body. Common side effects of Omniscan include:

  • nausea,
  • dizziness,
  • headache,
  • pain at injection site,
  • rash,
  • itching, or
  • hives

Omniscan is administered as a bolus dose IV injection under physician supervision. No specific drug interaction studies have been conducted. No adequate and well-controlled studies have been used with Omniscan and pregnancy; therefore, it should only be used during pregnancy if the potential benefit justifies the potential risk to the fetus. It is not known if Omniscan is excreted in human milk; discuss the use of Omniscan with your doctor if you are breastfeeding.

Our Omniscan (gadodiamide) injection Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.


About how much does an adult human brain weigh? See Answer
Omniscan Consumer Information

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Some side effects of gadodiamide may occur up to several days after injection.

Gadodiamide can cause a life-threatening condition in people with advanced kidney disease. Call your doctor right away if you have any symptoms of this condition, such as:

  • burning, itching, swelling, scaling, and tightening or hardening of your skin;
  • tiredness, muscle weakness;
  • joint stiffness in your arms, hands, legs, or feet;
  • deep bone pain in your ribs or your hips;
  • trouble moving; or
  • skin redness or dark patches.

Also call your doctor at once if you have:

  • kidney problems--little or no urination, swelling in your feet or ankles, feeling tired or short of breath; or
  • chest pain or pressure, pain spreading to your jaw or shoulder.

Common side effects may include:

  • headache;
  • dizziness; or
  • nausea.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Omniscan (Gadodiamide)


Digestive Disorders: Common Misconceptions See Slideshow
Omniscan Professional Information


The following adverse reactions are discussed in greater detail in other sections of the label:

  • Nephrogenic systemic fibrosis [see WARNINGS AND PRECAUTIONS]
  • Hypersensitivity reactions [see WARNINGS AND PRECAUTIONS]

Because clinical studies are conducted under widely varying conditions, adverse reaction rates observed in the clinical studies of a drug cannot be directly compared to rates in the clinical studies of another drug and may not reflect the rates observed in practice.

Clinical Studies Experience (Adults)

In clinical studies 1160 patients were exposed to OMNISCAN. The most frequent adverse reactions were nausea, headache, and dizziness that occurred in 3% or less of the patients. The majority of these reactions were of mild to moderate intensity.

The following adverse reactions occurred in 1% or less of patients:

Application Site Disorders: Injection site reaction.

Autonomic Nervous System Disorders: Vasodilation.

Body as a Whole-General Disorders: Anaphylactoid reactions (characterized by cardiovascular, respiratory, and cutaneous symptoms), fever, hot flushes, rigors, fatigue, malaise, pain, syncope.

Cardiovascular Disorders: Cardiac failure, rare arrhythmia and myocardial infarction resulting in death in patients with ischemic heart disease, flushing, chest pain, deep thrombophlebitis.

Central and Peripheral Nervous System Disorders: Convulsions including grand mal, ataxia, abnormal coordination, paresthesia, tremor, aggravated multiple sclerosis (characterized by sensory and motor disturbances), aggravated migraine.

Gastrointestinal System Disorders: Abdominal pain, diarrhea, eructation, dry mouth/vomiting, melena.

Hearing and Vestibular Disorders: Tinnitus.

Liver and Biliary System Disorders: Abnormal hepatic function.

Musculoskeletal System Disorders: Arthralgia, myalgia.

Respiratory System Disorders: Rhinitis, dyspnea.

Skin and Appendage Disorders: Pruritus, rash, erythematous rash, sweating increased, urticaria.

Special Senses, Other Disorders: Taste loss, taste perversion.

Urinary System Disorders: Acute reversible renal failure.

Vision Disorders: Abnormal vision.

Clinical Studies Experience (Pediatrics)

In the 97 pediatric patients in CNS studies with OMNISCAN [see Clinical Studies] and the 144 pediatric patients in published literature, the adverse reactions were similar to those reported in adults.

Postmarketing Experience

Because postmarketing reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. The following adverse reactions have been identified during the postmarketing use of OMNISCAN: Nervous System Disorders: Inadvertent intrathecal use causes convulsions, coma, paresthesia, paresis. Convulsions have been reported with intravenous use in patients with and without a history of convulsions or brain lesions. General Disorders: Nephrogenic Systemic Fibrosis (NSF) [see WARNINGS AND PRECAUTIONS]. Renal and Urinary System Disorders: In patients with pre-existing renal insufficiency: acute renal failure, renal impairment, blood creatinine increased [see WARNINGS AND PRECAUTIONS].

Read the entire FDA prescribing information for Omniscan (Gadodiamide)

© Omniscan Patient Information is supplied by Cerner Multum, Inc. and Omniscan Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

Health Solutions From Our Sponsors