Omnipaque 300

  • Imaging agents

Omnipaque 300 Generic Name & Formulations

General Description

Iohexol 647mg (equivalent to 300mg of organic iodine) per mL; soln; preservative-free.

Pharmacological Class

Radiographic contrast medium.

How Supplied

Omnipaque 140 (50mL)—10; Omnipaque 180 (10mL, 20mL)—10; Omnipaque 240 (10mL, 20mL, 50mL, 100mL, 150mL, 200mL)—10; Omnipaque 300 (10mL, 30mL, 50mL, 75mL, 100mL, 125mL, 150mL, 200mL)—10; Omnipaque 350 (50mL, 75mL, 100mL, 125mL, 150mL, 200mL, 250mL)—10


Generic Availability


Omnipaque 300 Indications


Intrathecal administration: in adults, for myelography (lumbar, thoracic, cervical, total columnar) and computerized tomography [CT] (myelography, cisternography, ventriculography). IV: in adults, for aortography including studies of the aortic arch, abdominal aorta and its branches, CT head and body imaging, cerebral arteriography, peripheral venography (phlebography), and excretory urography. In children, for angiocardiography (ventriculography), excretory urography, and CT head and body imaging. Oral or rectal: in children, for oral and rectal radiographic examination of the GI tract. Oral in conjunction with IV: in adults and children, for CT of the abdomen. Intraarticular: in adults, for arthrography. Body cavity: in adults, for hysterosalpingography. In children, for voiding cystourethrography (VCU).

Omnipaque 300 Dosage and Administration

Adults and Children

See full labeling for dosing based on procedure.

Omnipaque 300 Contraindications


Omnipaque 140 and 350: for intrathecal use. Omnipaque body cavity 240 and 300: for hysterosalpingography during pregnancy or suspected pregnancy, menstruation or when menstruation is imminent, within 6 months after termination of pregnancy, within 30 days after conization or curettage, when signs of infection are present in any portion of the genital tract including the external genitalia, and when reproductive tract neoplasia is known or suspected.

Omnipaque 300 Boxed Warnings

Boxed Warning

Risks with inadvertent intrathecal administration of Omnipaque 140 and 350 injection.

Omnipaque 300 Warnings/Precautions


Do not administer Omnipaque 140 and 350 intrathecally: severe reactions may occur (eg, death, convulsions/seizures, cerebral hemorrhage, coma, paralysis, arachnoiditis, acute renal failure, cardiac arrest, rhabdomyolysis, hyperthermia, brain edema). Have emergency treatment and trained personnel readily available. Monitor for hypersensitivity reactions. Cardiovascular disease (monitor). Pheochromocytoma. Homozygous sickle cell disease. Homocystinuria: avoid angiocardiography. Hyperthyroidism. Thyroid dysfunction (esp. children 0–3yrs); monitor. Renal impairment or risk of (eg, diabetes, dehydration, multiple myeloma, CHF, advanced vascular disease). History of severe cutaneous reaction: avoid. Ensure adequate hydration. Avoid extravasation (esp. in arterial or venous disease). Elderly. Pregnancy. Nursing mothers: consider interrupting; pump/discard breast milk for 10hrs after administration.

Omnipaque 300 Pharmacokinetics

See Literature

Omnipaque 300 Interactions


Concomitant drugs that lower seizure threshold (eg, phenothiazines): not recommended with intrathecal use. Discontinue metformin at time of, or prior to Omnipaque in patients with eGFR 30–60mL/min/1.73m2, history of hepatic impairment, alcoholism, heart failure, or will be given intra-arterial contrast; reevaluate eGFR 48hrs after procedure and restart metformin if renally stable. Increased risk of kidney injury with concomitant nephrotoxic drugs or diuretics. Discontinue CNS active drugs (eg, MAOIs, tricyclics, CNS stimulants, analeptics, tranquilizers, antipsychotics) ≥48hrs before myelography and for ≥24hrs post-procedure. Caution with beta-blockers. May interfere with thyroid uptake of radioactive iodine and decrease efficacy in thyroid carcinoma for up to 6–8 weeks. May reduce iodine-binding capacity of thyroid tissue for up to 2 weeks.

Omnipaque 300 Adverse Reactions

Adverse Reactions

Intrathecal: headache, backache, neckache, stiffness, neuralgia, nausea, vomiting, dizziness. IV: inj site reactions, pain, arrhythmias, angina/chest pain, hypotension, vertigo, vision abnormalities, headache, taste perversion, nausea; severe skin reactions (eg, SJS, TEN, AGEP, DRESS). Oral: diarrhea, nausea, vomiting, abdominal pain, flatulence, headache; children: also, fever, hypotension, urticaria. Body cavities: pain, swelling, heat sensation. Angiocardiography: thromboembolism. Hypersensitivity reactions, acute kidney injury, cardiovascular reactions.

Omnipaque 300 Clinical Trials

See Literature

Omnipaque 300 Note

Not Applicable

Omnipaque 300 Patient Counseling

See Literature