Library lamotrigine Self-reports cluster around four oral bands: a perceptible threshold cognitive lift at 12.5-25 mg, functional mood balance between 50-150 m…

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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…

Library levomethorphan Levomethorphan is a potent opioid analgesic that has never been marketed pharmaceutically. It is the L-stereoisomer of racemethorphan and a…

Library lofentanil Due to a sub-microgram active range, ordinary analytical balances cannot measure a non-lethal dose; volumetric dilution under inert atmosph…

Library loprazolam Is an Imidazolobenzidazepine derivative that has all the classic benzodiazepine effects. Is usually only prescribed for a short amount of t…

Library lorazepam Lorazepam is a short-acting depressant of the benzodiazepine class. First marketed by Wyeth Pharmaceuticals in the United States in 1977, i…

Library lormetazepam Relatively rare prescription benzodiazepine. Short acting with a short half life. Generally only seen in the Netherlands. Sedative, hypnoti…

Library lurasidone Lurasidone, sold under the brand name Latuda among others, is an atypical antipsychotic medication used to treat schizophrenia and bipolar…

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Library mam

Library mebroqualone A short acting analogue of Methaqualone, that is much more potent.

Library meclonazepam Meclonazepam is a benzodiazepine derivative structurally related to clonazepam, first developed by Hoffmann-La Roche during the 1960s. It w…

Library mecloqualone Mecloqualone is a quinazolinone-class GABAergic and is an analogue of methaqualone that was first made in 1960 and marketed mainly in Franc…

Library medazepam Medazepam is a long-acting benzodiazepine prodrug that metabolizes to diazepam and nordazepam, producing prolonged anxiolytic and sedative…

Library medetomidine Medetomidine is a veterinary anesthetic medication with potent sedative effects. As of December 2025, it is an emerging illicit drug adulte…

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Library mephenaqualone Mephenaqualone is a central nervous system (CNS) depressant of the quinazolinone class that acts as a sedative and hypnotic. It is an analo…

Library meprobamate Meprobamate—marketed as Miltown by Wallace Laboratories and Equanil by Wyeth, among others—is a carbamate derivative used as an anxiolytic…

Library metaclazepam A benzodiazepine derivative. Which is mostly an anxiolytic substance, without strong hypnotic properties that most benzodiazepines have. It…

Library metaqualone Methaqualone (brand name Quaalude in the US and Mandrax in the UK) is a central nervous system (CNS) depressant of the quinazolinone class…

Library metaxalone Metaxalone is a centrally acting skeletal-muscle relaxant, used to relieve pain and discomfort caused by muscle injuries.

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…