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Life sciences · Journal article
International Journal of Pharmaceutical Research and Applications · August 23, 2026
Raises a question worth testing. It does not answer one.
This is an exploratory in vitro screening study of ethanolic Leucas aspera extract against diarrhea-causing bacteria using MIC and MBC assays. No quantitative efficacy data, effect sizes, or comparisons to standard antimicrobials are provided, making this a mechanistic hypothesis-generating report rather than evidence of clinical utility.
In vitro laboratory screening study. Diarrhea-causing bacterial pathogens; specific species and number not stated. Intervention: Ethanolic extract of Leucas aspera.
Ethanolic extract demonstrated concentration-dependent antibacterial activity against tested diarrhea-causing pathogens MIC assays confirmed growth inhibition; MBC assays confirmed bactericidal effects at higher concentrations Activity attributed to phytoconstituents including flavonoids, phenolic compounds, tannins, alkaloids, and terpenoids
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
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In vitro screening study with no quantitative results reported, no comparator arm, and no clinical outcome data; raises mechanistic questions about plant extract activity but provides insufficient evidence to guide clinical practice.
As stated by the source record.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
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Background: Diarrheal diseases caused by pathogenic bacteria continue to be a major global health problem. The rapid emergence of antimicrobial resistance has reduced the effectiveness of conventional antibiotics, increasing the need for alternative therapeutic agents from medicinal plants. Leucas aspera is a well-known medicinal herb traditionally used for treating various infectious diseases and is rich in bioactive phytochemicals with potential antimicrobial properties.Aim and Objectives: The present study aimed to evaluate the in vitro antimicrobial activity of the ethanolic extract of Leucas aspera against diarrhea-causing bacterial pathogens by determining the Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC). The objectives were to prepare the ethanolic extract, determine the MIC using the broth microdilution method, evaluate the MBC by subculturing onto Mueller–Hinton agar, and assess the antibacterial efficacy of the extract against the selected pathogens.Materials and Methods: The ethanolic extract of Leucas aspera was prepared from shade-dried plant material. Antibacterial activity was evaluated against diarrhea-causing bacterial pathogens using the broth microdilution method to determine the MIC. Samples from wells showing no visible growth were subsequently subcultured onto Mueller–Hinton agar plates to determine the MBC. Standard microbiological procedures and appropriate controls were employed throughout the study.Resultsand Discussion: The ethanolic extract of Leucas aspera demonstrated concentration-dependent antibacterial activity against the tested pathogens. The MIC values confirmed the ability of the extract to inhibit bacterial growth, while the MBC values demonstrated its bactericidal effect at higher concentrations. The antimicrobial activity may be attributed to the presence of phytoconstituents such as flavonoids, phenolic compounds, tannins, alkaloids, and terpenoids, which are known for their antibacterial properties. These findings support the traditional medicinal use of Leucas aspera in the treatment of infectious diseases.Conclusion: The study concludes that the ethanolic extract of Leucas aspera possesses significant in vitro antimicrobial activity, as evidenced by both MIC and MBC assays. The extract exhibited inhibitory and bactericidal effects against diarrhea-causing bacterial pathogens, indicating its potential as a natural antimicrobial agent. Further phytochemical characterization, toxicity evaluation, and in vivo studies are recommended to validate its therapeutic application.
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