Ranitidine, also known by its brand name, Zantac, which is sold by the drug company Sanofi is available both over the counter (OTC) and by prescription. It belongs to the class of drugs known as H2 (or histamine-2) blockers. OTC ranitidine is commonly used to relieve and prevent heartburn but was found to cause cancer in some cases.  You may be eligible for a Zantac case review if you’ve purchased Zantac from a pharmacy or other drug store.  Most claimants have relied on faulty warnings that did not specify that NDMA or other component parts within Zantac may lead to health problems like cancer for you or a loved one after taking Zantac.