ACR Contrast Reaction Card

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Pre-Medication for IV Contrast

50 mg prednisone oral (3 doses) at 13 hours, 7 hours, and 1 hour prior to CT examination. (You must have a prescription from your doctor prednisone.)

50 mg benadryl (diphenhydramine) oral - 1 hour prior to the CT examination. (You do not need a prescription for benadryl - it can be purchased at any pharmacy.)