Table 2.

Pharmacologically distinct non-opioid adulterants identified within 1007 samples of illicit fentanyl

Non-Opioid Adulterants
Stimulants	Sedative-Hypnotics	Anesthetics	Other
Methamphetamine	Xylazine	Lidocaine	Acetaminophen (Analgesic, antipyretic)
Cocaine	Alprazolam	Procaine	Dextromethorphan
Caffeine	Clonazolam	Bupivacaine	Delta-9-tetrahydrocannabinol (Cannabinoid)
Benzeneethanamine (amphetamine analogue)	Clonazepam		4-methylaminoantipyrine (Metamizole metabolite, analgesic)
	Phenobarbital		Papaverine (Phosphodiesterase inhibitor)
	Etizolam		Levamisole (Anthelminthic)
	Carisoprodol		Mannitol, sorbitol (Diluents)
	Diazepam