It depends on the facts in your case and when the error occurred. Your doctor has a responsibility to write your prescription correctly, and the pharmacy that dispensed your medication has a responsibility to know the properties of the drugs they sell and to ensure the label reflects their knowledge.
For any legal advice, be sure to contact an attorney. Legal issues can be very complicated, which is why the Law Offices of Blaine A Tucker offers FREE consultation and FREE Case Review. In most cases, there is NO FEE, unless you WIN