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Opioids

'Gray Death' (Mixed Opioid Combo)

Street names: Gray death, Grey death

⚡What it does

  • Composite opioid high — heroin + fentanyl + carfentanil + U-47700 combinations

⚠Key risks

  • Named for its appearance AND its kill rate — multiple overdoses per batch
  • Component drugs require escalating naloxone doses
  • Users don't know what's in it; dealers don't either
  • Skin-contact overdose risk for first responders

✚Overdose signs

  • Respiratory arrest
  • Multiple naloxone doses needed
  • Cyanosis
  • Cardiac arrest

Category comparison — Opioids

SubstanceClassTop risksStreet price
'Gray Death' (Mixed Opioid Combo)Mixture — components Schedule I/IINamed for its appearance AND its kill rate — multiple overdoses per batch; Component drugs require escalating naloxone dosesSold as heroin/fentanyl — ~$10–$30 per bag
HeroinSchedule IExtremely addictive — physical dependence in weeks; Overdose: breathing slows or stops~$10–$40 per bag
FentanylSchedule IIRespiratory depression; Addiction in days~$20–$40 per counterfeit pill
Fentanyl HCl (powder)Schedule II / analogue prosecutionsLab-purity powder is far stronger than street mixes; Weighing errors are fatal~$60–$120/gram wholesale equivalent
AcetylfentanylSchedule I~5–15× weaker than fentanyl but still deadly at gram-level mistakes; Frequent cause of cluster overdoses~$25–$60/g where found
Furanylfentanyl (Fu-F)Schedule ILinked to hundreds of fatal overdoses 2016–2018; Potency similar to fentanyl~$20–$50/g
Street prices are regional estimates. Potency and cuts vary constantly.

?Frequently asked questions

What does 'Gray Death' (Mixed Opioid Combo) look like?

Chunky gray/gray-brown powder resembling concrete mix

What are the signs of a 'Gray Death' (Mixed Opioid Combo) overdose?

Respiratory arrest; Multiple naloxone doses needed; Cyanosis Call emergency services immediately and give naloxone if available — it reverses opioid overdoses.

How addictive is it?

Named for its appearance AND its kill rate — multiple overdoses per batch Dependence can develop with regular use.

🔗Sources & further reading

Facts on this page are compiled from these primary sources. External links open in a new tab.