As a heartburn sufferer, this is disturbing news. Not only do I suffer from heartburn from time to time, but I have also taken Zantac and Pepcid and the other over the counter heartburn medications as a source of relief when my heartburn is bad. My friend mentioned something like this concerning Pepcid last month, so I thought twice about taking it, but now I see it's not really the brand that has the problem, but it looks like it's the heartburn medication itself that is the root of the problem. It looks like this one particular substance has been linked to cancer. The entire article below will break it down more for you.