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Study identifier: NCT06979609 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Secondary Prevention of Clostridioides Difficile Using Vancomycin

Condition: Clostridioides Difficile Infection · Clostridioides Difficile Infection Recurrence · Clostridoides Difficile Associated Disease  ·  Sponsor: McGill University Health Centre/Research Institute of the McGill University Health Centre

PhasePhase 2/Phase 3
Planned participants300
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

Re-exposure to systemic antibiotics (i.e., antibiotics absorbed into the bloodstream) is common after a Clostridioides difficile infection (CDI) and is the strongest risk factor for a recurrent episode. Oral vancomycin to prevent a recurrence during antibiotic re-exposure may reduce this risk but the data supporting this practice are limited. The aim of this trial is: 1\) Does oral vancomycin prophylaxis prevent CDI recurrences in patients with recent CDI (within 120 days) and who are re-exposed to systemic antibiotics? The trial will compare oral vancomycin to placebo. Participants will: * Take the study drug (either vancomycin or placebo) twice daily for the duration of systemic antibiotics plus once daily for 7 days after completion of systemic antibiotics. * Attend an in-person or over the phone follow-up at day 56 * Respond to weekly electronic questionnaires

This description comes directly from the study's public registry record.

Talk to the study team

Emily G. McDonald, MD MSc  ·  514-934-1934  ·  cdi@idtrials.ca

Always discuss trial participation with your own doctor first.

Locations (1)

McGill University Health CentreMontreal, Quebec, CanadaRecruiting

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Source record: clinicaltrials.gov/study/NCT06979609