The National Precursor Log Exchange (NPLEx) is a real-time electronic logging system used by pharmacies and law enforcement to track sales of over-the-counter (OTC) cold and allergy medications containing precursors to the illegal drug, methamphetamine.

The NPLEx Solution

NPLEx - National Precursor Log Exchange

Every day, millions of people across the country rely on effective OTC cold and allergy medications for their intended use. A small percentage of people buy these same medications with the intent of diverting a component into the illegal and highly volatile drug, methamphetamine.

The National Association of Drug Diversion Investigators (NADDI) provides NPLEx at no cost to states that have legislation requiring real-time electronic monitoring of precursor purchases, and agree to use the system.

States that have adopted PSE tracking:




Recent News

NEWS - June 13, 2013 - firstcoastnews.com
Clay County makes three meth arrests in Keystone Heights

PRESS RELEASE - June 11, 2013
Two more states adopt NPLEx to fight methamphetamine

NEWS - June 7, 2013 - wcax.com
Police share crime-fighting strategies

NEWS - May 24, 2013 - al.com
Report says new law cutting down on purchases of meth ingredients


Single Site Log in

Want to learn more about the new single site log in changes with NPLEx and MethCheck?


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NPLEx Stats

Law Enforcement Users: 6909

Participating Pharmacies

Pharmacies across the country are using the NPLEx e-tracking solution to not only track the purchase of products containing pseudoephedrine, but also to ensure compliance with federal pseudoephedrine tracking laws, and help law enforcement track down individuals who purchase over legal limits.




Click the links below to see how NPLEx is making a difference in communities like yours.