Iopanoic Acid
Iopanoic Acid is a radiopaque contrast agent used for oral cholecystography to visualize the gallbladder and biliary tract. As an iodinated compound, it is absorbed from the gastrointestinal tract and concentrated in bile, allowing clear radiographic imaging of the biliary system. While largely replaced by ultrasound and CT in modern practice, it remains an option when other imaging modalities are inconclusive or contraindicated.
A diagnostic contrast agent used to image the gallbladder and biliary system via X-ray examination.
Key facts at a glance
- ATC
- V08AC06
- RxNorm
- 5967
- Generic
- Iopanoic Acid
- Class
- atc-v08
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- oral
- Forms
- tablet
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Oral cholecystography for evaluation of gallbladder disease including gallstones, cholecystitis, and biliary obstruction. May be used when ultrasound or CT are unavailable, contraindicated, or provide inconclusive results.
Iopanoic Acid is an organic iodine compound that is absorbed from the GI tract, transported to the liver, and excreted into bile where it concentrates in the gallbladder. The iodine content makes the structure radiopaque, allowing visualization on X-ray films.
Contraindicated in patients with iodine hypersensitivity, severe renal or hepatic impairment, and hyperthyroidism. May cause GI disturbances including nausea, diarrhea, and abdominal cramps. Adequate hydration is recommended. Should not be used during pregnancy unless absolutely necessary. Multiple doses may be required for optimal visualization.
Official drug label
WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy