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Library kratom Kratom is a tropical plant (Mitragyna speciosa) native to Thailand and Southeast Asia, where its leaves have been used as a traditional med…

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Library lean Lean, also called purple drank or sizzurp, is a non-standard mixture usually made from codeine and promethazine cough syrup. Codeine is an…

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Library mam

Library methadone Methadone (sold under trade names such as Dolophine and Methadose) is a synthetic opioid analgesic used for the treatment of moderate to se…

Library methiodone IC-26 is an analogue of the opioid analgesic methadone, where the carbonyl group has been replaced by the bioisosteric sulfone group.

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Library methoxyacetylfentanyl Methoxyacetyl-fentanyl is a highly potent synthetic opioid and fentanyl analogue classified as a depressant research chemical. Like other f…

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Library methyldihydromorphine

Library methylenedioxynitazene Methylenedioxynitazene (3',4'-Methylenedioxynitazene) is a benzimidazole derivative which has been sold as a designer drug over the interne…

Library metodesnitazene Metodesnitazene is a benzimidazole derivative with opioid effects, though unlike related compounds such as metonitazene and etodesnitazene…

Library metonitazene Metonitazene is classified as Opioid. It belongs to the Nitazene (synthetic opioid) chemical class.

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Library monoacethylmorphin Monoacethylmorphin has been identified by trusted drug-checking services in 2 published analytical results during 2015. These warnings esta…

Library morpheridine Is a 4-Phenylpiperidine derivative that is related to Pehidine. It is roughly 4x as potent as the parent compound, does not cause convulsio…

Library morphine Morphine is the principal alkaloid of the opium poppy (Papaver somniferum) and the prototypical opioid analgesic. First isolated by Friedri…

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Library morphinenoxide Morphine-N-oxide (genomorphine) is an active opioid metabolite of morphine. Morphine itself, in trials with rats, is 11–22 times more poten…

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Library mppp Desmethylprodine or 1-methyl-4-phenyl-4-propionoxypiperidine is an opioid analgesic drug developed in the 1940s by researchers at Hoffmann-…

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Library mt45 A synthetic opioid drug that was rumoured to be roughly 80% the potency of Morphine orally. Was created by Dainippon Pharmaceutical in the…

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Library n2cfentanyl The N-(2C)-fentanyl series, is the 2C family coupled with fentanyl.

Library nalbuphine Nalbuphine, sold under the brand names Nubain among others, is an opioid analgesic which is used in the treatment of pain. It is given by i…

Library naloxone Naloxone (commonly sold under the brand names Narcan and Evzio) is a synthetic mu-opioid antagonist of the morphinan chemical class that is…

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Library ndesethyl_protonitazene N-Desethyl protonitazene has been identified by trusted drug-checking services in 2 published analytical results during 2026. These warning…