Why do I have to stop my Metformin for x-rays using IV contrast? I am afraid my diabetes will get out of control. When can I start back on the Metformin?

Your diabetes will not get out of control if you are off of your medication for 2-4 days. Metformin has to be stopped for your safety as the combination of Metformin and the X-ray contrast could possibly harm your kidneys. We need to draw a creatinine level at 48 hours, and if it is normal, you may then restart your Metformin.