Yes, prednisone is safe to give as a short course to patients taking ezetimibe
There are no known drug-drug interactions between prednisone and ezetimibe, and short-course corticosteroids can be safely administered to patients on ezetimibe therapy.
Evidence Base
The FDA drug label for ezetimibe does not list corticosteroids or prednisone among its drug-drug interactions 1. The documented interactions for ezetimibe are limited to:
- Cyclosporine (requires monitoring)
- Fibrates (minor increase in ezetimibe bioavailability, clinically insignificant)
- Bile acid sequestrants like cholestyramine (should be dosed 2-4 hours apart)
Pharmacologic Rationale
Ezetimibe works by inhibiting intestinal cholesterol absorption through the NPC1L1 transporter at the intestinal brush border 1. It undergoes glucuronidation in the intestine and liver, with a 22-hour half-life and primarily fecal excretion 2.
Prednisone, conversely, works through glucocorticoid receptor mechanisms and does not interact with ezetimibe's absorption, metabolism, or elimination pathways. The lack of shared metabolic pathways makes clinically significant interactions highly unlikely.
Clinical Safety Data
Multiple studies have demonstrated ezetimibe's favorable drug interaction profile across diverse patient populations, including transplant recipients on complex immunosuppressive regimens 3. The safety profile remains consistent whether ezetimibe is used as monotherapy or in combination with other lipid-lowering agents 4, 5.
Important Caveats
- Monitor liver function if prolonged corticosteroid use is planned: While ezetimibe alone rarely causes hepatotoxicity 6, both drugs can independently affect liver enzymes
- Consider the indication for prednisone: Short courses (days to weeks) for conditions like urticaria 7 or inflammatory conditions pose no interaction concerns
- Continue ezetimibe without interruption: There is no need to hold ezetimibe during short-course prednisone therapy
The absence of any documented interaction in FDA labeling, pharmacokinetic studies, and clinical safety data supports the safe concurrent use of these medications.