Federal drug officials are warning residents in Colorado and neighboring states after recent drug seizures revealed pills containing unusually dangerous combinations of opioids. The findings, confirmed by laboratory testing, have prompted renewed concern about the risks associated with illicit pills circulating in the region.
Warning
The Drug Enforcement Administration’s Rocky Mountain Field Division issued the alert following seizures in Colorado and Utah that uncovered pills mixed with fentanyl and carfentanil, as well as pills containing fentanyl and heroin.
“These findings reinforce the message that people should never take pills from anyone other than a licensed medical provider or pharmacy,” said David Olesky, Special Agent in Charge of the DEA’s Rocky Mountain Field Division, in a press release.
Officials emphasized that pills obtained outside regulated medical systems often contain substances not disclosed to users, increasing the risk of overdose and death.
Findings
The pills were analyzed by the DEA’s Southwest Laboratory, which confirmed the presence of multiple opioid combinations. Some pills contained fentanyl mixed with carfentanil, while others included fentanyl combined with heroin.
According to the DEA, heroin is rarely found in pill form, and its presence alongside fentanyl is considered unusual. The discovery suggests evolving production methods by illicit drug manufacturers seeking to increase potency.
The pills were described as blue, green, or a blue-green mix in color, though officials cautioned that appearance alone cannot reliably identify contents.
Risk
The DEA reiterated that fentanyl remains the most significant drug threat currently facing the United States. The agency estimates that hundreds of thousands of deaths over the past decade have been linked to fentanyl exposure.
Carfentanil, which was also identified in some of the seized pills, is a synthetic opioid originally developed as a veterinary tranquilizer for large animals. The DEA states that it is approximately 100 times more potent than fentanyl, making even minimal exposure potentially lethal.
The presence of carfentanil significantly increases overdose risk, particularly when users are unaware of what substances a pill contains.
Locations
The seizures in Colorado occurred in the Denver metropolitan area and along the Western Slope, according to the DEA. In Utah, pills were seized in the Salt Lake City area.
While the agency did not specify the quantities recovered, officials said the geographic spread of the seizures indicates that the pills may already be circulating across multiple communities.
Enforcement
The DEA continues to coordinate with state and local law enforcement agencies to investigate the source and distribution networks behind the pills. Officials have stated that enforcement efforts are focused on disrupting supply chains while also increasing public awareness of overdose risks.
The agency also encouraged individuals to seek help through treatment programs and to carry overdose-reversal medications where legally available.
Public
Health and law enforcement officials stress that warnings such as this are intended to prevent accidental overdoses, particularly among individuals who may believe they are taking prescription-style pills.
The DEA has urged community members to report suspicious activity and to avoid any pills not obtained through legitimate medical channels. Officials say continued vigilance remains critical as drug formulations continue to change.
FAQs
Why did the DEA issue this warning?
Seized pills contained rare and dangerous opioid combinations.
What drugs were found in the pills?
Fentanyl mixed with carfentanil and fentanyl mixed with heroin.
Where were the pills seized?
In Colorado and Utah, including Denver and Salt Lake City areas.
Why is carfentanil dangerous?
It is about 100 times more potent than fentanyl.
What does the DEA advise the public to do?
Only take pills prescribed by doctors or dispensed by pharmacies.

















