Online Drug Take-Back Database September 21, 2018 General Dispensing, Drug, Prescribing The California State Board of Pharmacy has launched a searchable online database to help patients find a pharmacy anywhere in the state to safely dispose of unwanted or expired prescription or over-the-counter drugs, including controlled substances. These pharmacies may offer onsite collection bins and/or envelopes for mailing back medications. Additional drug take-back locations can be found on the federal Drug Enforcement Administration, Don't Rush to Flush, and the California Department of Public Health websites.