Epien 90-2201 Debacterol 1.5 ml Multi Use VialEpien 90 2201 Debacterol Canker Sore Pain Relief, 1. 5 mL Bottle. Canker Sores Pain Relief. Topical Treatment for Recurring Aphthous Stomatitis (RAS) or Canker Sores. Approximately 5 second application seals and protects Canker Sores allowing them to heal over a few days without pain. DEBACTEROL is the first product to effectively eliminate pain normally associated with the onset of an oral ulcer with ONE treatment. A unique patented blend of