National drug store chains such as CVS and Walgreen’s have recently removed the common heartburn medicine Zantac from their shelves. Zantac, brand name for ranitidine, contains a carcinogen called NDMA. Zantac has recently been linked to various types of cancers. Please contact our mass tort attorneys handling Oklahoma Zantac cancer lawsuits. They provide free case reviews and charge no fees if they do not recover for you.