Deadly Carfentanil Resurges as Traffickers Shift from Fentanyl

Potent opioid 100 times stronger than fentanyl claims lives across the US as drug crisis evolves

Apr. 18, 2026 at 8:50pm

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A minimalist, glowing neon outline of a human figure in a crouched, distressed pose, representing the devastating impact of the highly potent opioid carfentanil, against a dark, shadowy background.The resurgence of the ultra-potent opioid carfentanil, 100 times stronger than fentanyl, has become a 'murder weapon' claiming lives across the US.El Dorado Hills Today

A resurgence of the weapons-grade opioid carfentanil, which is 10,000 times more potent than morphine and 100 times stronger than fentanyl, has led to a spike in overdose deaths across the United States. Traffickers are increasingly turning to carfentanil as a replacement for fentanyl after a crackdown on fentanyl precursor chemicals in China. Experts warn that even small amounts of carfentanil can be lethal, and that traditional overdose reversal treatments may not be effective.

Why it matters

The rise of carfentanil, a drug so potent it is considered a 'murder weapon', underscores the evolving and increasingly dangerous nature of the opioid crisis in the US. As traffickers adapt to regulatory changes, they are turning to even more deadly substances, putting unsuspecting drug users at grave risk. This shift highlights the urgent need for new approaches to address the crisis and protect vulnerable communities.

The details

Carfentanil, a synthetic opioid used as a tranquilizer for large animals like elephants, has seen a dramatic resurgence in the US drug supply. In 2025, DEA labs identified carfentanil 1,400 times in drug seizures, up from just 54 times in 2022. Traffickers are likely turning to carfentanil as a replacement for fentanyl after China cracked down on the sale of fentanyl precursor chemicals. Experts warn that even an amount the size of a poppy seed can be lethal, and that traditional overdose reversal treatments like naloxone may not be effective.

  • In 2025, DEA labs identified carfentanil 1,400 times in US drug seizures.
  • In 2023, DEA labs identified carfentanil 145 times in US drug seizures.
  • In 2022, DEA labs identified carfentanil 54 times in US drug seizures.

The players

Michael Nalewaja

A 36-year-old Alaskan electrician who died after unknowingly taking a lethal cocktail of fentanyl and carfentanil, which his mother believes was mistaken for cocaine.

Kelley Nalewaja

The mother of Michael Nalewaja, who is pushing for legislative and judicial changes to address the threat of carfentanil after her son's death.

Frank Tarentino

The DEA's chief of operations for its northeast region, who warns that carfentanil presents an 'extremely frightening proposition' for people with opioid dependence.

Michael King Jr.

The founder of the Opioid Awareness Foundation, who describes carfentanil as a 'biological weapon' that is far more dangerous than fentanyl.

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What they’re saying

“Even if somebody had been there prepared with Narcan—even if somebody had called 911 in time—he was not going to survive.”

— Kelley Nalewaja, Mother of Michael Nalewaja

“You're talking about not even a grain of salt that could be potentially lethal. This presents an extremely frightening proposition for substance-abuse-dependent people who seek opioids on the street today.”

— Frank Tarentino, DEA Chief of Operations, Northeast Region

“It's like a biological weapon. If the world thinks we had a problem with fentanyl, that's minute compared to what we're going to be dealing with with carfentanil.”

— Michael King Jr., Founder, Opioid Awareness Foundation

What’s next

Experts and officials are calling for increased regulation, interdiction, and public awareness efforts to address the growing threat of carfentanil and protect vulnerable communities.

The takeaway

The resurgence of carfentanil, a drug so potent it is considered a 'murder weapon', underscores the evolving and increasingly dangerous nature of the opioid crisis. As traffickers adapt to regulatory changes, they are turning to even deadlier substances, putting unsuspecting drug users at grave risk and highlighting the urgent need for new approaches to address this public health emergency.