For Diabetic Patients on Glucophage or Glucovance

How to take diabetes medicine that contain Metformin* after receiving a contrast injection for a CT Scan


*The diabetes medications that contain Metformin include:

  • Actoplus
  • Avandamet
  • Fortamet
  • Glucophage
  • Glumetza
  • Janumet
  • Kombiglyze
  • Metaglip
  • Prandimet
  • Riomet

If you suffer from:
  • Alcohol abuse
  • Angina
  • Heart failure
  • Kidney problems
  • Liver disease
  • Severe infection

Stop taking Metformin and contact your doctor within 48 hours before restarting. Show this sheet to your doctor.


If you do not suffer from any of the above conditions:
  • Continue taking Metformin normally.

Information for MDs 
  • Category 1: Normal renal function and none of the above co-morbidities: Metformin nood not be discontinued.
  • Category 2: Normal renal function but above co-morbidities: May restart Metformin after 48 hours if clinically stable.
  • Category 3: Renal dysfunction: May restart Metformin only after cautious follow up of renal function.