| Ioxilan | A diagnostic contrast agent used in various medical imaging procedures, such as angiography, urography, and computed tomographic scans. |
| Diatrizoate | An injected contrast agent used in radiology. |
| Ethiodized oil | A contrast agent used in imaging procedures. |
| Iodixanol | A contrast agent used during coronary angiography, particularly in patients with renal dysfunction. |
| Iohexol | A contrast agent for intrathecal administration used in myelography and contrast enhancement for computerized tomography. |
| Iodipamide | A contrast agent used in cholangiography and cholecystography. |
| Iopamidol | A diagnostic imaging agent used for angiography throughout the cardiovascular system. |
| Iothalamic acid | A diagnostic contrast agent used in various medical imaging procedures, such as angiography, arthrography, and computed tomographic scans. |
| Ioversol | A diagnostic contrast agent used in various medical imaging procedures, such as angiography, urography, and computed tomographic scans. |
| Iopromide | An X-ray contrast agent used during various types of imaging tests such as angiography and contrast computed tomography (CT) imaging tests. |
| Carbon dioxide | A naturally-occurring gas used as a insufflation gas during minimally invasive surgeries to enlarge and stabilize body cavities to provide better visibility of the surgical area. |
| Ioxaglic acid | A tri-iodinated benzoate contrast agent used in various radiological procedures including angiography, phlebography, urography, computed tomography (CT), and hysterosalpingography. |
| Metrizoic acid | For use as a contrast medium . |
| Barium sulfate | A contrast agent used for CT scans of the gastrointestinal tract. |
| Sodium bicarbonate | A compound used for the symptomatic treatment of heartburn, acid indigestion, and upset stomach as well as the treatment of metabolic acidosis associated with conditions such as severe renal disease and circulatory insufficiency due to shock. |
| Potassium bitartrate | A laxative used to treat constipation. |