>> Read more trending news
NDMA is a possible carcinogen that is found in water and food, the FDA said in September.
The medication was removed from store shelves in September, but the pills could still be in people's homes.
If you currently take ranitidine, the FDA suggests using medications like Pepcid, Tagamet, Nexium, Prevacid and Prilosec. As always, before changing medications, you should talk with your doctor about treatment options.