Metformin is a medicine that should not be taken on the day of a CT scan, due to the use of iodine contrast material. You may restart your metformin medication 48 hours after your CT has been completed, however contact your Primary Care physician or Nephrologist before resuming to see if lab work is required to evaluate your renal functions.  Drink plenty of fluids, at least six 8oz glasses of water to help flush out your kidneys.

Common medicines that contain metformin include:

  • Glucophage
  • Avandemet
  • Fortamet
  • Glumetza
  • Actoplusmet
  • Janumet
  • Metaglip
  • Riomet
  • PrandiMet
  • Kombiglyze XR