Polypharmacy, i.e., the misuse of multiple prescription drugs or prescription medication with other substances, is highly problematic. Whether unintentional or deliberate, misuse of multiple drugs can lead to adverse effects including addiction; drug-drug interactions; and overdose, potentially resulting in death. Polypharmacy is not uncommon; almost 84 percent of prescription drug misusers receiving substance abuse treatment in Indiana reported using at least one additional substance, most commonly alcohol or marijuana
