California Code, Penal Code - PEN § 2679

(a) The court shall determine whether the state has proven, by clear and convincing evidence, that the confined person has the capacity for informed consent and has manifested his informed consent.

(b) If the court has determined that the person lacks the capacity for informed consent, the court shall determine by clear and convincing evidence that such therapy, other than psychosurgery as referred to in subdivision (c) of Section 2670.5, would be beneficial;  that there is a compelling interest justifying the use of the organic therapy upon the person;  that there are no less onerous alternatives to such organic therapy;  and that such organic therapy is in accordance with sound medical-psychiatric practice.  If the court so determines, then the court shall authorize the administration of the organic therapy for a period not to exceed six months.

(c) If the court has determined that the person has the capacity for informed consent and has manifested his informed consent to organic therapy, the court shall determine by clear and convincing evidence that such therapy would be beneficial;  that there is a compelling interest justifying the use of the organic therapy upon the person;  that there are no less onerous alternatives to such organic therapy;  and that such organic therapy is in accordance with sound medical-psychiatric practice.  If the court so determines then the court shall authorize the administration of the organic therapy for a period not to exceed six months.