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Published on: November 8, 2015
Safety considerations with mycophenolate sodium
1The University of Western Ontario, Department of Paediatrics, Children's Hospital of Western Ontario, Schulich School of Medicine & Dentistry, London, Ontario, Canada. guido.filler@lhsc.on.ca
Abstract:
Following 10 years of clinical use of mycophenolate mofetil (MMF), a prodrug of mycophenolic acid, the FDA has approved enteric-coated mycophenolate sodium (EC-MPS). EC-MPS was developed to reduce the upper-gastrointestinal (GI) effects of MMF. Unlike oral MMF, where absorption starts in the stomach, EC-MPS releases MPA in the small intestine. Along with the pharmacology and pharmacokinetics, three randomized, controlled clinical trials in solid-organ transplantation, comparing MMF and EC-MPS, are reviewed. Disappointingly, EC-MPS was similar to MMF in efficacy and safety and did not significantly improve the GI side effects. Moreover, bioequivalence dosing has only been established with concomitant ciclosporin. The pharmacokinetic characteristics must be studied in greater detail. EC-MPS is a safe and effective immunosuppressive agent approved for use in the prevention of acute rejection after renal transplantation. However, the anticipated improvement of GI side effects has not been forthcoming.
Insights
Enteric-coated mycophenolate sodium (EC-MPS) offers no significant gastrointestinal (GI) benefit over mycophenolate mofetil (MMF) in transplant patients. Both immunosuppressants demonstrate similar efficacy and safety profiles.
Area of Science:
- Immunology
- Pharmacology
- Transplantation Medicine
Background:
- Mycophenolate mofetil (MMF) has been widely used for over a decade.
- Enteric-coated mycophenolate sodium (EC-MPS) was developed as an alternative to MMF.
- EC-MPS aims to reduce upper gastrointestinal (GI) side effects by releasing mycophenolic acid (MPA) in the small intestine, unlike MMF which absorbs in the stomach.
Purpose of the Study:
- To review the pharmacology, pharmacokinetics, and clinical trial data comparing EC-MPS and MMF.
- To evaluate the efficacy, safety, and GI tolerability of EC-MPS versus MMF in solid-organ transplantation.
Main Methods:
- Review of three randomized, controlled clinical trials comparing MMF and EC-MPS.
- Analysis of pharmacological and pharmacokinetic data for both agents.
Main Results:
- EC-MPS demonstrated similar efficacy and safety compared to MMF.
- No significant improvement in GI side effects was observed with EC-MPS.
- Bioequivalence dosing for EC-MPS was only established when co-administered with cyclosporine.
Conclusions:
- EC-MPS is a safe and effective immunosuppressant for preventing acute rejection in renal transplantation.
- The anticipated reduction in GI side effects with EC-MPS was not realized.
- Further pharmacokinetic studies are needed for EC-MPS.
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