California Code, Business and Professions Code - BPC § 4107.5

If a manufacturer, wholesaler, third-party logistics provider, or pharmacy has reasonable cause to believe that a dangerous drug or dangerous device in, or having been in, its possession is counterfeit or the subject of a fraudulent transaction, the manufacturer, wholesaler, third-party logistics provider, or pharmacy shall notify the board within 72 hours of obtaining that knowledge. This section shall apply to any dangerous drug or dangerous device that has been sold or distributed in or through this state.