Applied Innovation,
Improved Products,
Better Life.
ST. LOUIS, MO – October 22, 2025
Gateway Pharma announced the successful completion of Phase 1 clinical trial for Metronidazole Delayed-Release (DR) Capsules, a QIDP-designated candidate for Clostridioides difficile infection (CDI).
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Low Systemic Exposure
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High Fecal Concentrations
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No adverse events reported
Our Mission
Innovating site-specific delivery of antibiotics to combat antibiotic resistance threats
to the United States and the World.
BioSTL Award in 2018 Venture Showcase
July, 2023 – Gateway Pharma raised $300K to move Metronidazole 505(b)(2) product forward into Phase 1 clinical study.
September, 2020 – Received NIH NIAID Pre-Clinical Service Award on Metronidazole DR Capsules for GMP manufacturing.
August, 2018 – Received NIH SBIR Phase I grant on Metronidazole Colon-Delivery formulation platform and completed feasibility study in animal model.
November, 2018 – Gateway won the BioSTL Award on the 10th Startup Connection Venture Showcase in St. Louis.