Cal. Welf. & Inst. Code § 5152
(c)
(e) A person designated by the mental health facility shall give to any person who has been detained at that facility for evaluation and treatment and who is receiving medication as a result of their mental illness, as soon as possible after detention, written and oral information about the probable effects and possible side effects of the medication. The State Department of Health Care Services shall develop and promulgate written materials on the effects of medications, for use by county mental health programs as disseminated or as modified by the county mental health program, addressing the probable effects and the possible side effects of the medication. The following information shall be given orally to the patient:
(4)