Medazepam

nobrium, azepamid, rudotel +3 more

Benzodiazepine derivative that has all of the classic benzodiazepine effects. Is a long-acting benzodiazepine drug (Half...

Melatonin

A naturally occurring hormone produced in the body, which promotes sleep at certain times in the day based on the circad...

Memantine

An NMDA-antagonist that if used recreationally can cause to a very prolonged "hole" lasting up to 16+ hours....

Mephedrone

4-mmc, meow, m-cat +2 more

A shortlived euphoric stimulant, developed as an analogue of MDMA, which was extremely popular in the research chemical ...

Mephtetramine

mtta

Has a Phenpropylamine backbone like Methylphenidate. Seems barely active past negative physical effects. Only reports th...

Mescaline

buttons, mesc, san +1 more

A psychedelic of the phenethylamine family. Found in psychedelic cacti that have long been used by peoples native to the...

Metaclazepam

A benzodiazepine derivative. Which is mostly an anxiolytic substance, without strong hypnotic properties that most benzo...

Metaxalone

skelaxin

Muscle relaxant, that is used to relieve pain from general pain, and other musculoskeletal conditions....

Methadone

A synthetic opioid drug used as an analgesic and is often used in detoxification off of other opioids. As it has a much ...

Methallylescaline

mal

Mescaline analogue first synthesised by Alexander Shulgin, derived from and less potent than allylescaline. A psychedeli...

Methamnetamine

methylnaphetamine, mnt, n-methyl-pal-287

A selective serotonin releaser, which also shows some light psychedelic activity. Almost always taken with a stimulant, ...

Methamphetamine

meth, desoxyn, tik

A fairly common and very strong CNS stimulant. It is sometimes prescribed in the form of desoxyn for ADHD and severe obe...

Methaqualone

ludes, quaaludes, qualudes +1 more

A pharmaceutical depressant and sedative phased out due to the better safety profile of benzodiazepines, part of the Qua...

Methedrone

bk-pmma

BK-PMMA Closely related to PMMA and others. Stimulant....

Methoxphenidine

2-meo-diphenidine, methoxyphenidine, 2-mxp +1 more

A dissociative from the diarylethylamine class, a more potent analogue of diphenidine. Known to be unpredictable, and ca...

Methoxyacetyl-Fentanyl

maf, desfluoroocfentanil

A quite potent fentanyl analogue....

Methoxyketamine

2-meo-ketamine

An arylcyclohexylamine drug and analogue of ketamine, though slightly less potent. Produces similar dissociative and ana...

Methoxypiperamide

Drug of the Piperazine class. The 4-Methoxy-α-keto analogue of Methylbenzylpiperazine. Seemingly inactive on its own. Wa...

Methylmethaqualone

mmq

A more potent analogue of methaqualone with a short duration. Thought to be potentially neurotoxic. Has pro-convulsive e...

Methylmorphenate

Stimulant of the phenylmorpholine class, an analogue of Methylphenidate where the piperidine ring has been replaced by a...

Methylone

bk-mdma, m1, mdmc

βk-MDMA is a cathinone stimulant and empathogen, similar in structure to MDMA, though more stimulating and less empathog...

Methylphenidate

mph, ritalin, concerta +1 more

A psychostimulant commonly used in the treatment of ADHD, narcolepsy and obesity, particularly in the EU instead of Adde...

Methyprylon

noludar

Sedative of the pipeidinedone family. Was used for treating insomnia, yet is rarely used today due to substances with fe...

Metizolam

metiz, desmethyletizolam

Also known as desmethyletizolam, a thienodiazepine similar in effects and structure to etizolam, but around half as pote...