North Carolina General Statutes Chapter 99B. Products Liability § 99B-5. Claims based on inadequate warning or instruction

(a) No manufacturer or seller of a product shall be held liable in any product liability action for a claim based upon inadequate warning or instruction unless the claimant proves that the manufacturer or seller acted unreasonably in failing to provide such warning or instruction, that the failure to provide adequate warning or instruction was a proximate cause of the harm for which damages are sought, and also proves one of the following:

(b) Notwithstanding subsection (a) of this section, no manufacturer or seller of a product shall be held liable in any product liability action for failing to warn about an open and obvious risk or a risk that is a matter of common knowledge.

(c) Notwithstanding subsection (a) of this section, no manufacturer or seller of a prescription drug shall be liable in a products liability action for failing to provide a warning or instruction directly to a consumer if an adequate warning or instruction has been provided to the physician or other legally authorized person who prescribes or dispenses that prescription drug for the claimant unless the United States Food and Drug Administration requires such direct consumer warning or instruction to accompany the product.