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Fentanyl production in Mexico

Cartel chemists synthesize fentanyl in clandestine laboratories in Mexico, where the substance may be sold as powder, mixed into heroin or cocaine, or pressed into counterfeit prescription pills.

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Jan 27, 2026
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How does fentanyl production and trafficking flow from China to Mexican cartels and into the U.S.?

The generally runs from chemical suppliers and brokers in — who supply finished fentanyl and, increasingly after 2019, precursor chemicals — to Mexican transnational criminal organizations (TCOs) that...