WRC Laboratories

WRC Laboratories was a nutraceutical and dietary supplement company based in Galveston, Texas, that specialized in developing natural remedies for gastrointestinal conditions. The company is best known for developing and marketing EsophaGuard, an over-the-counter formulation containing purified d-limonene, a monoterpene extracted from orange peel oil. EsophaGuard was designed to provide long-lasting relief from the symptoms of heartburn, dyspepsia, and gastroesophageal reflux disease (GERD) by coating the gastric mucosa and esophagus. WRC Laboratories supported its product through proprietary clinical evaluations demonstrating the efficacy of d-limonene as a safe alternative to conventional acid-suppressing medications.