WESLACO – The Drug Enforcement Administration is cracking down on counterfeit pills nationwide.

Many of the "fakes" are testing positive for fentanyl, a man made substance that is 50 times more potent than heroin and 100 times more potent than morphine. All it takes is 2 milligrams to cause an overdose.

Rudy Maldonado, DEA assistant special agent in charge, says 2 milligrams is the size of 2 or 3 grains of salt.

Maldonado also says the Rio Grande Valley does see cases of fentanyl overdoses.

Most of the overdoses seen are from people buying what they believe is Xanax or oxycodone on the streets.

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