Iothalamate Meglumine: A Contrast Agent for Diagnostic Imaging

Iothalamate meglumine is a type of contrast agent that is used for diagnostic imaging of the kidneys, urinary tract, and blood vessels. It is injected into a vein and helps to create clear images of these organs and structures by enhancing the contrast between them and the surrounding tissues.

Contrast agents are substances that make certain parts of the body more visible on X-rays, computed tomography (CT) scans, magnetic resonance imaging (MRI) scans, or other imaging techniques. They can help doctors to diagnose diseases, injuries, or abnormalities in the body.

Iothalamate meglumine belongs to a class of contrast agents called iodinated contrast media. These are compounds that contain iodine, a chemical element that absorbs X-rays and makes the organs or tissues that contain it appear brighter on the images.

Iothalamate meglumine is also known by its brand names Conray, Cysto-Conray, Cystografin, and Renografin. It is available in different concentrations and formulations depending on the type and purpose of the imaging procedure.

How Does Iothalamate Meglumine Work?

Iothalamate meglumine works by increasing the density of the blood, urine, or cerebrospinal fluid (CSF) that flows through the organs or structures that are being examined. This creates a contrast between these fluids and the surrounding tissues, which have a lower density.

When X-rays pass through the body, they are absorbed by different tissues to varying degrees. The more dense a tissue is, the more X-rays it absorbs and the less it allows to pass through. This creates an image on a film or a screen that shows the different shades of gray that represent the different densities of the tissues.

By increasing the density of the fluids in certain parts of the body, iothalamate meglumine makes them appear brighter or whiter on the X-ray images. This helps to highlight the shape, size, and function of these organs or structures and to detect any problems or abnormalities in them.

For example, iothalamate meglumine can be used to evaluate the function of the kidneys and urinary tract by measuring how fast and how much of it is excreted in the urine. It can also be used to visualize the blood vessels in various parts of the body by showing how well they are filled with blood and if there are any blockages or narrowing in them.

What Are The Benefits Of Iothalamate Meglumine?

Iothalamate meglumine is a safe and effective contrast agent that has been used for diagnostic imaging for over 60 years. It has several benefits, such as:

  • It provides high-quality images of the kidneys, urinary tract, and blood vessels that can help doctors to diagnose various conditions and diseases.
  • It has a low risk of causing allergic reactions or other serious side effects compared to some other types of contrast agents.
  • It is compatible with most imaging techniques and equipment, such as X-rays, CT scans, MRI scans, fluoroscopy, angiography, urography, and myelography.
  • It is easy to administer and does not require any special preparation or precautions before or after the procedure.

What Are The Risks Of Iothalamate Meglumine?

Like any medical procedure or substance, iothalamate meglumine may have some risks or complications. These include:

  • Mild to moderate side effects such as nausea, vomiting, headache, flushing, itching, rash, or pain at the injection site. These usually go away within a few hours after the procedure and do not require any treatment.
  • Rare but serious side effects such as allergic reactions (anaphylaxis), kidney damage (nephrotoxicity), thyroid dysfunction (thyrotoxicosis), or heart problems (cardiotoxicity). These may require immediate medical attention and treatment.
  • Interactions with other medications or substances that may affect the results of the imaging procedure or increase the risk of side effects. These include metformin (a drug for diabetes), iodine-containing supplements or foods (such as seaweed), or contrast agents used for other imaging procedures.
  • Pregnancy or breastfeeding. Iothalamate meglumine may cross the placenta or pass into breast milk and affect the fetus or infant. Therefore, it should be used with caution and only if clearly needed in pregnant or breastfeeding women.

How To Prepare For An Imaging Procedure With Iothalamate Meglumine?

Before undergoing an imaging procedure with iothalamate meglumine, you should:

  • Inform your doctor about your medical history, especially if you have any allergies, kidney problems, thyroid problems, heart problems, diabetes, or blood disorders.
  • Inform your doctor about any medications or supplements you are taking, especially metformin, iodine-containing products, or other contrast agents.
  • Inform your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
  • Follow your doctor’s instructions about fasting, drinking fluids, or taking any medications before the procedure.
  • Wear comfortable and loose-fitting clothing and remove any jewelry or metal objects from your body before the procedure.

What To Expect During And After An Imaging Procedure With Iothalamate Meglumine?

During an imaging procedure with iothalamate meglumine, you should:

  • Lie down on a table or sit in a chair, depending on the type and purpose of the procedure.
  • Have a small needle or catheter inserted into a vein in your arm or hand. This is where the iothalamate meglumine will be injected.
  • Feel a warm or cold sensation, a metallic taste in your mouth, or a mild discomfort when the iothalamate meglumine is injected. These are normal and temporary reactions that will subside soon after the injection.
  • Remain still and follow your doctor’s instructions while the images are being taken. You may be asked to hold your breath, change positions, or perform certain movements during the procedure.
  • Have the needle or catheter removed from your vein after the procedure is completed.

After an imaging procedure with iothalamate meglumine, you should:

  • Drink plenty of fluids to help flush out the iothalamate meglumine from your body. This may also help to prevent any side effects or complications.
  • Resume your normal activities and diet unless your doctor tells you otherwise.
  • Monitor your health and report any signs or symptoms of side effects or complications to your doctor as soon as possible.

Iothalamate Meglumine Price Comparison

The following table shows the average price of iothalamate meglumine in different countries, based on the data from The prices are for 50 ml of 60% solution of iothalamate meglumine, which is a common dosage and formulation used for diagnostic imaging. The prices may vary depending on the brand, concentration, formulation, quantity, and availability of the product.

CountryPrice (USD)

Table 1: Iothalamate Meglumine Price Comparison

Top 5 Global Brands Of Iothalamate Meglumine

According to, the top 5 global brands of iothalamate meglumine are:

  • Conray (Mallinckrodt Inc.)
  • Cysto-Conray (Mallinckrodt Inc.)
  • Cystografin (Bracco Diagnostics Inc.)
  • Renografin (Bracco Diagnostics Inc.)
  • Urografin (Bayer AG)

These brands have different concentrations and formulations of iothalamate meglumine that are suitable for different types of imaging procedures and purposes.


Iothalamate meglumine is a contrast agent that is used for diagnostic imaging of the kidneys, urinary tract, and blood vessels. It works by increasing the density of the fluids in these organs or structures and making them more visible on X-ray images. It has several benefits, such as providing high-quality images, having a low risk of side effects, and being compatible with most imaging techniques. It also has some risks, such as causing allergic reactions, kidney damage, thyroid dysfunction, or heart problems. Therefore, it should be used with caution and under the supervision of a doctor. Iothalamate meglumine is available in different brands, concentrations, and formulations that can affect its price and availability in different countries.



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