1. Food and Drug Administration. FDA updates and press announcements on NDMA in Zantac (ranitidine). 2019. https://www.fda.gov/drugs/drug-safety-and-availability/fda-updates-and-press-announcements-ndma-zantac-ranitidine.
2. Food and Drug Administration. Statement alerting patients and health care professionals of NDMA found in samples of ranitidine. 2019. https://www.fda.gov/news-events/press-announcements/statement-alerting-patients-and-health-care-professionals-ndma-found-samples-ranitidine.