# Iothalamate meglumine (bladder contrast)

Source: https://onco.cc/drugs/iothalamate-meglumine/  
OnCo record `iothalamate-meglumine` (Imaging agent). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

An X-ray dye put into the bladder through a catheter to outline the bladder and urethra.

## Summary

Cysto-Conray II (Liebel-Flarsheim, NDA 017057, first approved 17 April 1972) "is indicated for use in retrograde cystography and cystourethrography"; its label states "NOT FOR INTRAVASCULAR ADMINISTRATION".

## Fields

- Kind: Imaging agent
- Status: approved
- Last checked: 2026-11-04
- Also known as: iothalamate; Cysto-Conray; Cysto-Conray II
- Tags: contrast-agents-gaps-2026-11; diagnostic
- Brand: Cysto-Conray II
- Modality: Iodinated contrast agent for X-ray imaging of the bladder (instilled through a catheter)
- Mechanism: An iodinated molecule instilled into the bladder that absorbs X-rays and outlines the bladder and urethra.
- Approvals: US 1972: Retrograde cystography and cystourethrography

## Sources

- Drugs@FDA Cysto-Conray (NDA 017057): https://www.accessdata.fda.gov/scripts/cder/daf/index.cfm?event=overview.process&ApplNo=017057
- DailyMed label: Cysto-Conray II: https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=8841ab4d-674d-4beb-88a5-13e35f6005cc

## Connected records

- technologies: [CT (computed tomography)](https://onco.cc/technologies/ct/), [Iodinated and barium contrast for CT and X-ray](https://onco.cc/technologies/iodinated-contrast-media/)

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