California Code, Revenue and Taxation Code - RTC § 6358

(a) Any form of animal life the products of which ordinarily constitute food for human consumption.

(b) Feed for any form of animal life the products of which ordinarily constitute food for human consumption or are to be sold in the regular course of business.

(c) Seeds and plants the products of which ordinarily constitute food for human consumption or are to be sold in the regular course of business.

(d) Fertilizer to be applied to land the products of which are to be used as food for human consumption or are to be sold in the regular course of business.

(e) On or after January 1, 1997, drugs or medicines, including oxygen, the primary purpose of which is the prevention or control of disease, that are administered to animal life the products of which ordinarily constitute food for human consumption.