Texas Health and Safety Code - HEALTH & SAFETY § 462.011. Consent to Medication

(1) the consent is given voluntarily and without coercive or undue influence;

(2) the patient and, if appropriate, the patient's representative authorized by law to consent on behalf of the patient are informed in writing that consent may be revoked; and

(3) the consent is evidenced in the patient's clinical record by a signed form prescribed by the treatment facility or by a statement of the treating physician or a person designated by the physician that documents that consent was given by the appropriate person and the circumstances under which the consent was obtained.