Controlled Substances

Maine's controlled substance Prescription Monitoring Program includes drugs that have been classified by the U.S. Drug Enforcement Administration (DEA) in Schedule II, III, and IV. The Controlled Substances Act (CSA), passed by the U.S. Congress in 1970, established five Schedules. Schedule I drugs (e.g., heroin) have extremely high potential for abuse and no medical application in the United States. The drugs on the other schedules have medical uses. Schedule II drugs have high abuse potential (this class includes Oxycontin ® and Ritalin ®). Schedule III drugs are slightly safer and less prone to abuse (e.g., Vicodin ®). Schedule IV drugs, such as the benzodiazepines, are considered less potentially harmful and addicting than those in the Schedule III. (Maine's PMP does not include Schedule V drugs.)

The DEA makes decisions about scheduling of drugs in consultation with the U.S. Food and Drug Administration (FDA) and the National Institute on Drug Abuse (NIDA).

A listing of the drugs in each schedule can be accessed at the DEA web site:

External Links

More Information about PMP

Please feel free to explore the links below and on the left and right sides of this page, call the Substance Abuse and Adult Mental Health Services at 287-2595, or email



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