Texas Health and Safety Code - HEALTH & SAFETY § 481.067. Records

(a) A person who is registered with the Federal Drug Enforcement Administration to manufacture, distribute, analyze, or dispense a controlled substance shall keep records and maintain inventories in compliance with recordkeeping and inventory requirements of federal law and with additional rules the board or director adopts.

(b) The pharmacist-in-charge of a pharmacy shall maintain the records and inventories required by this section.

(c) A record required by this section must be made at the time of the transaction that is the basis of the record. A record or inventory required by this section must be kept or maintained for at least two years after the date the record or inventory is made.