Bismuth Subsalicylate's Role in the Prevention of Travelers' Diarrhea (NCT03535272) | Clinical Trial Compass
TerminatedPhase 3
Bismuth Subsalicylate's Role in the Prevention of Travelers' Diarrhea
Stopped: Unable to reach target sample size.
United States482 participantsStarted 2018-05-20
Plain-language summary
The purpose of this study is to determine if the use of prophylactic bismuth subsalicylate (BSS) has an effect on the acquisition of travelers' diarrhea (TD) or antimicrobial resistance (AMR) genes in fecal samples among international travelers who departed from the United States to South East Asia, South Central Asia, or Africa. Our hypotheses will be tested using a double-blinded, placebo controlled randomized clinical trial with participants from a pre-travel health clinic in the United States.
Who can participate
Age range18 Years – 69 Years
SexALL
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Inclusion criteria
✓. Be ≥ 18 and \<70 years of age at the time of enrollment
✓. Sign an informed consent stating willingness to participate and comply with the study protocol
✓. Plan on leaving for an international trip ≥7 days after their pre-travel consultation
✓. Plan on traveling in country for ≥7 days but ≤21 days (21 day limit due to BSS duration recommendations and a lack of data on longer-term BSS use)
✓. Traveling to either South East Asia, South Central Asia, North Africa, or Sub-Saharan Africa for at least 7 days of their itinerary
✓. Be willing to complete an initial eligibility screening
✓. Be willing to complete questionnaires and provide biologic specimens (stool) within 7 days of departure and within 10 days after return
✓. Be willing to refrain from taking any pre-biotics, probiotic, synbiotic and/or herbal supplements throughout their study period
Exclusion criteria
What they're measuring
1
Traveler's Diarrhea
Timeframe: Change from baseline through 10 days post-travel
✕. Are traveling in country for \<7 or \>21 days
✕. Have known or suspected contraindications to taking BSS (including, but not limited to, travelers with kidney disease, diabetes, gout, a clotting disorder, or an allergy to any component of BSS)
✕. Are pregnant (via self-report), are planning to become pregnant, or may become pregnant during travel (not actively using contraception and are sexually active), or are breastfeeding
✕. Routinely take a medication known to interact with BSS (including, but not limited to, insulin, methotrexate, valproic acid, angiotensin-converting enzyme inhibitors, anticoagulants, or other salicylates)
✕. Have taken an antibiotic in the 30 days before departure
✕. Have taken any medications that may lower one's ability to fight infection (e.g., steroids, monoclonal antibodies, etc.)
✕. Have previous diagnoses of immunocompromising conditions such as HIV/AIDS, complement deficiency, immunoglobulin deficiency, or undergoing active chemotherapy or participants with chronic gastrointestinal disorders, such as chronic diarrhea, irritable bowel syndrome (IBS), inflammatory bowel disease (i.e., Crohn's disease, ulcerative colitis), celiac disease, malabsorption syndromes, pancreatic insufficiency, gallbladder disease, or current gastrointestinal cancer