This chapter also does not apply to any of the following:
(a) Any livestock drug that is intended for, and that is used solely for, laboratory or experimental purposes.
(b) Any substance that is intended for, and that is used primarily as a pesticide and that is registered as a pesticide under Chapter 2 (commencing with Section 12751).
(c) Any biological product that is manufactured under a license issued by the United States Department of Agriculture or the State Department of Health.
(d) Any drug that is required by federal law to be sold on prescription only.