Los Angeles Study Finds Fentanyl Users Tolerate 1,250 Hospital Doses, Undercutting Standard Addiction Care
Updated
Updated · The New York Times · Jul 2
Los Angeles Study Finds Fentanyl Users Tolerate 1,250 Hospital Doses, Undercutting Standard Addiction Care
1 articles · Updated · The New York Times · Jul 2
Summary
More than 500 illicit fentanyl samples and interviews with 47 users in Los Angeles found habitual users commonly consume about 125 milligrams of pure fentanyl a day—levels researchers said would otherwise be unsurvivable.
That tolerance is making standard withdrawal and recovery medications such as buprenorphine and methadone ineffective for many patients because dosing models were built around heroin and prescription opioid addiction.
Fentanyl is at least 50 times more potent than heroin, and the study said the daily street dose reported by seasoned users equals roughly 1,250 hospital doses of 100 micrograms used during and after surgery.
The findings, published in Drug and Alcohol Dependence from data gathered between September 2023 and January 2026, add to calls from clinicians and addiction experts to revise treatment guidelines for a more volatile street drug supply.
As standard addiction medicine fails against 'unsurvivable' fentanyl doses, what does the future of treatment look like?
With street fentanyl deadlier than ever, why are overdose deaths in Los Angeles surprisingly on the decline?
Are we entering a new era where naloxone, our main life-saving tool, becomes obsolete against new synthetics?
Los Angeles Fentanyl Study Reveals Extreme Tolerance: Urgent Need for New Addiction Treatment Protocols
Overview
A new study from Los Angeles reveals that regular fentanyl users have developed unprecedented levels of tolerance, consuming amounts far beyond what current medical protocols can handle. This extreme tolerance challenges existing opioid addiction treatments, as standard medications like buprenorphine and methadone were designed for much lower opioid use. Clinicians now face the difficult task of treating patients who use the equivalent of thousands of MMEs of oral morphine in fentanyl each day. The findings highlight a major shift in the drug landscape and show that traditional treatment regimens are now outdated for this population.