# Prescription drug monitoring programs (PDMPs) explained

> How state-run databases track controlled substance prescriptions and what that means for patients.

**Canonical URL:** https://drugsmonitor.com/guides/prescription-drug-monitoring-programs
**Last updated:** 2026-06-11

Prescription Drug Monitoring Programs are state-run electronic databases that track controlled substance prescriptions. They help prescribers identify potential misuse, doctor shopping, or dangerous drug combinations.

Every state except Missouri operates a PDMP. Data typically includes patient name, drug prescribed, quantity, days supply, and prescriber information. Access is limited to licensed healthcare providers and regulators.

Patients should be aware that their controlled substance prescriptions are tracked across prescribers. PDMP data can also be relevant in litigation to establish prescribing history and medication timelines.

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*Educational guide from DrugsMonitor.com. Not legal advice.*