Iotalamic acid is primarily used as a contrast agent in medical imaging, specifically in X-ray and CT scan procedures. It enhances the visibility of internal body structures, such as blood vessels, the urinary tract, and the gastrointestinal system, by absorbing X-rays more effectively than surrounding tissues. This makes it easier for healthcare professionals to diagnose abnormalities, blockages, or other conditions. It is often administered intravenously or orally, depending on the area being examined. Its high iodine content is key to its effectiveness as a radiopaque substance. Proper dosage and patient monitoring are essential to minimize potential side effects, such as allergic reactions or kidney stress.