Zantac

Zantac: Clinical Profile and Modern Reassessment of a Historic H2 Antagonist Before we dive into the deep end, let me be clear about something that still makes my stomach turn a little. Zantac. Ranitidine. The drug that was once the crown jewel of GI medicine. I’ve been practicing gastroenterology for twenty-three years, and I still remember the sinking feeling in my chest when the NDMA contamination story broke. We’d prescribed it for millions of patients.