Prescribers of controlled substances may use 2018-compliant prescription forms as well as prescription forms with serial numbers through the end of 2020. SB 149 provides a transition period to new prescription forms that will be required starting January 1, 2021. The legislation, which became effective as soon as it was signed by the governor, resolves the unintended issues created when AB 1753 became effective Jan. 1, 2019. The effective date of AB 1753 left prescribers with very little time to order new forms and it was learned that the format of the serial number did not conform to industry standards. Prescribers in need of new controlled substance prescription forms should ensure they order from an approved printer listed on the DOJ website. New prescription forms with serial numbers formatted in the manner prescribed by SB 149 may be available by 2020. Consider moving to e-prescribing for controlled substances.