Everyday Medications Found to Influence Gut Bacteria
A recent review from the Medicines and Healthcare products Regulatory Agency (MHRA) and the University of Glasgow reveals that common medications beyond antibiotics can significantly affect gut bacteria, potentially altering the efficacy of other treatments. This discovery could pave the way for more personalised treatment plans and enhance the overall safety and effectiveness of medications used in tandem.
Groundbreaking Findings on Non-Antibiotic Medicines
The comprehensive review, published on 23 December in Nature npj Antimicrobials and Resistance, highlights evidence that various drugs, such as diabetes medications and antipsychotics, can modify the composition of gut microbiota. These changes may have significant implications for how these medicines function, especially when patients are taking multiple medications simultaneously.
Dr Chrysi Sergaki, the senior author of the study and Head of Microbiome at the MHRA, stated that while the impact of antibiotics on gut bacteria is well-documented, this review uncovers that some commonplace medicines also disrupt the microbiome. This understanding could lead to better data that enhances drug development and supports improved patient care.
Implications for Patient Health and Drug Development
A deeper comprehension of how medications interact with gut bacteria may assist the MHRA and researchers in explaining why certain individuals have different responses to identical treatments, as well as distinguishing why specific side effects emerge in some patients and not others. The gut microbiome is essential for maintaining immunity and metabolism, with its balance well known to be affected by antibiotics. However, this review emphasises that numerous non-antibiotic drugs may influence gut health as well, albeit in subtler ways.
For instance, it has been identified that:
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Metformin, a common treatment for diabetes, modifies gut bacteria, contributing to both its therapeutic effects and side effects like bloating or diarrhoea.
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Antipsychotic medications have been linked to disruptions in gut bacteria that may lead to weight gain and metabolic changes.
Improving the understanding of how different medications affect gut bacteria could also contribute to efforts aimed at preserving the efficacy of antibiotic treatments. Disruption in the gut microbiome can lead to an increase in resistant bacteria, highlighting the need for identifying medications that are gentler on the microbiome to curb the rise of antimicrobial resistance over time.
Looking Ahead: Future Developments
Dr Anastasia Theodosiou, a co-author of the study at the University of Glasgow, emphasised that recognising the microbiome’s role is crucial in designing safer, more effective medications. The MHRA is collaborating with researchers to establish updated standards for studying the effects of medicines on gut and other microbiomes during the drug development process, ensuring that a consistent body of evidence is available for regulators and developers.
Moreover, the agency is exploring innovative methods to enhance the prediction of side effects and interactions between different medications. The overarching aim is to create tools that assist healthcare providers in understanding how various medicines interact in real-world scenarios, fostering safer, tailored prescribing practices. Patients are encouraged to continue taking their medications as directed and to consult healthcare professionals with any concerns.
Source: official statements, news agencies, and public reports.
https://www.gov.uk/government/news/how-medicines-affect-gut-bacteria-could-inform-safer-more-effective-use
