Section 14402.
Cal. Food and Agricultural Code - FAC § 14402.
in effect(a)
Beginning January 1, 2018, a medically important antimicrobial drug may be used when, in the professional judgment of a licensed veterinarian, the medically important antimicrobial drug is any of the following:
(1)
Necessary to treat a disease or infection.
(2)
Necessary to control the spread of a disease or infection.
(3)
Necessary in relation to surgery or a medical procedure.
(b)
A medically important antimicrobial drug may also be used when, in the professional judgment of a licensed veterinarian, it
is needed for prophylaxis to address an elevated risk of contraction of a particular disease or infection.
(c)
A person shall not administer a medically important antimicrobial drug to livestock solely for purposes of promoting weight gain or improving feed efficiency.
(d)
Unless the administration is consistent with subdivision (a), a person shall not administer a medically important antimicrobial drug in a regular pattern.
Source: CA Legislative Counsel Bulk DataURL: https://downloads.leginfo.legislature.ca.gov/pubinfo_2025.zipFetched: 6/27/2026