(a) Schedule II Prescriptions.(1) Except as provided by subsection (e) of this section, a practitioner, as defined in §481.002(39)(A) of the TCSA, must issue a written prescription for a Schedule II controlled substance only on an official Texas prescription form or through an electronic prescription that meets all requirements of the TCSA. This subsection also applies to a prescription issued in an emergency situation.(2) A practitioner who issues a written prescription for any quantity of a Schedule II controlled substance must complete an official prescription form.(3) Except as provided by subsection (f) of this section, a practitioner may issue multiple written prescriptions authorizing a patient to receive up to a 90-day supply of a Schedule II controlled substance provided:(A) each prescription is issued for a legitimate medical purpose by a practitioner acting in the usual course of professional practice;(B) the practitioner provides written instructions on each prescription, other than the first prescription if the practitioner intends for that prescription to be filled immediately, indicating the earliest date on which a pharmacy may dispense each prescription; and(C) the practitioner concludes that providing the patient with multiple prescriptions in this manner does not create an undue risk of diversion or abuse.(4) A schedule II prescription must be dispensed no later than 30 days after the date of issuance or, if the prescription is part of a multiple set of prescriptions, issued on the same day, no later than 30 days after the earliest date on which a pharmacy may dispense the prescription as indicated on each prescription.(5) A person dispensing a Schedule II controlled substance prescription shall provide written notice on the safe disposal of controlled substance prescription drugs that includes information on locations at which Schedule II controlled substance prescription drugs are accepted for safe disposal. In lieu of listing those locations, the notice may alternatively provide the address of an Internet website specified by the board that provides a searchable database of locations at which Schedule II controlled substance prescription drugs are accepted for safe disposal. The written notice may be provided to the patient in an electronic format, such as by e-mail, if the patient or patient's agent requests the notice in an electronic format and the request is documented. Such written notice is not required if:(A) the Schedule II controlled substance prescription drug is dispensed at a pharmacy or other location that:(i) is authorized to take back those drugs for safe disposal; and(ii) regularly accepts those drugs for safe disposal; or(B) the dispenser provides to the person to whom the Schedule II controlled substance prescription drug is dispensed, at the time of dispensation and at no cost to the person:(i) a mail-in pouch for surrendering unused controlled substance prescription drugs; or(ii) chemicals to render any unused drugs unusable or non-retrievable.(b) Schedules III through V Prescriptions.(1) A practitioner, as defined in §§481.002(39)(A), (C), (D) of the TCSA, may use prescription forms and order forms through individual sources. A practitioner may issue, or allow to be issued by a person under the practitioner's direction or supervision, a Schedule III through V controlled substance on a prescription form for a valid medical purpose and in the course of medical practice.(2) Except as provided in subsection (f) of this section, Schedule III through V prescriptions may be refilled up to five times within six months after date of issuance.(c) Electronic prescribing.(1) A practitioner is permitted to issue and to dispense an electronic controlled substance prescription only in accordance with the requirements of the Code of Federal Regulations,