Metformin and Your CT Scan
About Metformin and Your Procedure
You are scheduled to have a CT scan or another procedure that uses iodine contrast material (radiology dye). This type of contrast, which is used in the veins, may affect your kidneys and how your body clears metformin from your system.
Common medicines that contain metformin are:
- Glucophage XR
1 Week Before Your Procedure
- Ask your health care provider who prescribed your medicine that contains metformin if it is OK for you to stop taking it on the day of your scan or procedure.
- Also ask this health care provider if you should have your kidney function checked before you restart your medicine that contains metformin.
The Day of Your Procedure and 48 Hours After
If your doctor who prescribed your medicine that contains metformin says it is OK:
- Stop taking your medicine that contains metformin on the day of your scan or procedure where contrast will be used.
- Restart your medicine 48 hours after your scan or procedure
Your questions are important. Call your doctor or health care provider if you have questions or concerns.
Imaging Services: 206-598-6200
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