Substance guides

Pressed pills and fentanyl: The counterfeit pill crisis

Published August 10, 2025 · 8 min read · Updated April 2026

Reviewed for accuracy by licensed clinical professionals.

Counterfeit pills made to look like legitimate prescription medications but containing fentanyl are the fastest-growing cause of overdose death in the United States.

What pressed pills are

Pills manufactured in illegal labs using pill presses that produce tablets visually identical to pharmaceutical medications. Common counterfeits include Xanax bars, oxycodone (M30 pills), Adderall, and Percocet.

Why they kill

Fentanyl is mixed unevenly in counterfeit pills, creating hotspots where a single pill may contain a lethal dose. DEA testing found that 6 out of 10 counterfeit pills contain a potentially lethal dose of fentanyl.

Who is at risk

Anyone buying pills from non-pharmacy sources. College students buying study drugs. People buying painkillers from friends or dealers. Social media drug markets have made counterfeit pills accessible to populations that would never seek out street drugs.

Protection

Never take pills from non-pharmacy sources. Use fentanyl test strips if using any pill of uncertain origin. Carry naloxone. Never use alone. The only safe pills come from a pharmacy with your name on the bottle.

Authoritative sources

This article references guidelines from: NIDA · SAMHSA · CDC

Frequently asked questions

How do you know if pills are pressed?

You cannot tell by looking. Counterfeits are designed to be visually identical to pharmaceutical pills. Only laboratory testing or fentanyl test strips can determine contents.

What pills are most commonly counterfeited?

M30 oxycodone pills, Xanax bars, Adderall, and Percocet are the most commonly counterfeited.

How many fake pills contain fentanyl?

DEA testing found 6 out of 10 counterfeit pills contain a potentially lethal dose of fentanyl.

Disclaimer: Informational only. Not medical advice. SAMHSA: 1-800-662-4357.