Bus. & Prof. Code, § 4166

(a) A wholesaler that uses the services of a third-party logistics provider or carrier, including, but not limited to, the United States Postal Service or a common carrier, shall be liable for the security and integrity of any dangerous drugs or dangerous devices through that provider or carrier until the drugs or devices are delivered to the transferee at its board-licensed premises.

(b) A third-party logistics provider that uses the services of a carrier, including, but not limited to, the United States Postal Service or a common carrier, shall have in place and comply with written policies and procedures that provide for both of the following:

(1) Verification that the third-party logistics provider, or the owner of the dangerous drugs or dangerous devices stored at the third-party logistics provider, has imposed obligations on the carrier that provide for the security and integrity of any dangerous drugs or dangerous devices transported by the carrier until the drugs or devices are delivered to the transferee at its premises.

(2) Confirmation, prior to shipping a dangerous drug or dangerous device, that the intended recipient is legally authorized to receive the dangerous drug or dangerous device.

(c) Nothing in this section is intended to affect the liability of a wholesaler, third-party logistics provider, or other distributor for dangerous drugs or dangerous devices after their delivery to the transferee.