Oral meropenem for superbugs: challenges and opportunities
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Updated: Nov 30, 2025

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Published on: April 18, 2019
Aun Raza1, Shih Chen Ngieng2, Fekade Bruck Sime1
1School of Pharmacy, The University of Queensland, Woolloongabba, QLD 4102, Australia; Centre for Translational Anti-infective Pharmacodynamics, School of Pharmacy, The University of Queensland, Brisbane, QLD 4102, Australia.
Abstract:
An increase in the number of multidrug-resistant microbial strains is the biggest threat to global health and is projected to cause >10 million deaths by 2055. The carbapenem family of antibacterial drugs are an important class of last-resort treatment of infections caused by drug-resistant bacteria and are only available as an injectable formulation. Given their instability within the gut and poor permeability across the gut wall, oral carbapenem formulations show poor bioavailability. Meropenem (MER), a carbapenem antibiotic, has broad-spectrum antibacterial activity, but suffers from the above-mentioned issues. In this review, we discuss strategies for improving the oral bioavailability of MER, such as inhibiting tubular secretion, prodrug formulations, and use of nanomedicine. We also highlight challenges and emerging approaches for the development of oral MER.
Insights
Developing oral meropenem (MER) is crucial to combat rising multidrug-resistant infections. Strategies like nanomedicine and prodrugs aim to enhance MER
Area of Science:
- Microbiology and Pharmacology
- Drug Delivery Systems
Background:
- Multidrug-resistant microbial strains pose a significant global health threat, projected to cause over 10 million deaths annually by 2055.
- Carbapenems, including meropenem (MER), are critical last-resort antibiotics but are only available as injectables due to poor oral bioavailability.
- Instability in the gut and limited permeability across the gut wall hinder oral MER formulations.
Purpose of the Study:
- To review strategies for enhancing the oral bioavailability of meropenem (MER).
- To discuss challenges and emerging approaches for developing oral MER formulations.
Main Methods:
- Review of scientific literature on meropenem oral delivery.
- Analysis of strategies including inhibition of tubular secretion, prodrug development, and nanomedicine applications.
Main Results:
- Various strategies show promise for improving oral MER bioavailability.
- Nanomedicine and prodrug approaches are key areas of development.
- Overcoming MER's poor oral absorption remains a significant challenge.
Conclusions:
- Enhancing oral MER bioavailability is essential for combating antimicrobial resistance.
- Further research into novel drug delivery systems is needed for effective oral carbapenem therapy.
- Successful development of oral MER could revolutionize treatment for resistant infections.
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