'3,4-Methylenedioxy-N,N-dimethylamphetamine (MDDM, MDDMA), also known as N,N-dimethyl-MDA or N-methyl-MDMA', is a lesser-known serotonin releasing agent and psychoactive drug of the phenethylamine, amphetamine, and MDxx families. It is the N,N-dimethyl analogue of 3,4-methylenedioxyamphetamine (MDA) and the N-methyl derivative of MDMA. The drug is a known synthetic impurity of MDMA and has also been described as a possible novel designer drug in 2025.
'3,4-Methylenedioxy-N,N-dimethylamphetamine (MDDM, MDDMA), also known as N,N-dimethyl-MDA or N-methyl-MDMA', is a lesser-known serotonin releasing agent and psychoactive drug of the phenethylamine, amphetamine, and MDxx families. It is the N,N-dimethyl analogue of 3,4-methylenedioxyamphetamine (MDA) and the N-methyl derivative of MDMA. The drug is a known synthetic impurity of MDMA and has also been described as a possible novel designer drug in 2025.
==Use and effects== In his book PiHKAL (Phenethylamines I Have Known and Loved), Alexander Shulgin lists MDDM's dose as greater than 150mg orally and its duration as unknown. Findings on the effects of MDDM are very mixed. In two reports, with 150mg and 1,000mg both orally, no effects whatsoever occurred. In another report, 550mg orally resulted in very negative effects. Finally, two people who used 200mg orally found that it produced very pleasant effects for 20minutes, wore off, but then resurged to produce even stronger effects 4hours later. The higher-dose reports were communicated to Shulgin anonymously and he was uncertain whether the actual substance employed was indeed MDDM. More research seems necessary to characterize MDDM, but Shulgin expected that a "pretty hefty dose" would be required for it to produce effects.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).