If you discovered symptoms of cancer that may be attributed to your past use of Zantac or other heartburn medicine containing ranitidine, you may have a legitimate product liability claim. Seek medical attention and make sure your cancerous condition is treated and thoroughly documented. Then, contact a lawyer you trust who has experience handling cases involving defective drugs and medical devices. A skilled product liability lawyer can evaluate your situation in light of similar claims and advise you regarding the process of filing a claim.