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 (MDA) [meth″il-di-ok″se-am-fet´ah-mēn]
a hallucinogenic compound chemically related to amphetamine and mescaline; it is widely abused and causes dependence.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.


A phenethylamine and amphetamine class of psychoactive agent, used primarily as a recreational drug but also to facilitate transcendence, meditation, psychedelic psychotherap and psychonautics. There are no medical indications for MDA.

Adverse effects
Cardiovascular and CNS stimulation; acute effects include agitation, sweating, hypertension, tachycardia, hyperthermia, convulsions, death.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.


1. Mento-dextra anterior–obstetrics.
2. Methydopamine.
3. 3,4-Methylenedioxymethamphetamine. See Ecstasy.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Determination of amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine, 3,4-methylenedioxyethylamphetamine, and 3,4-methylenedioxymethamphetamine in urine by online solid-phase extraction and ion-pairing liquid chromatography with detection by electrospray tandem mass spectrometry.
Rapid simultaneous determination of amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine, 3,4-methylenedioxymethamphetamine, and 3,4-methyl enedioxyethylamphetamine in urine by solid-phase extraction and GC-MS: a method optimized for high-volume laboratories.
[4] Nonstandard abbreviations: MDA, 3,4-methylenedioxyamphetamine; MDMA, 3,4-methylenedioxymethamphetamine; MDEA, 3,4-methylenedioxyethylamphetamine; NICI, negative-ion chemical ionization; GC-MS, gas chromatography-mass spectrometry; S-HFBPCl, S-(-)-N-heptafluorobutyrylprolyl chloride; LOD, limit of detection; IS, internal standard(s); SPE, solid-phase extraction; AT, Agllent Technologies; QC, quality control; ACR, above calibration range sample; LQS, limit of quantification sample; AM, amphetamine; MA, methamphetamine; CI, confidence interval; LOQ, limit of quantification; and HFBP, heptafluorobutyrylprolyl.
[5] Nonstandard abbreviations: MDMA, 3,4-methylenedioxymethamphetamine; MDA, 3,4-methylenedioxyamphetamine; HMMA, 4-hydroxy-3-methoxymethamphetamine; S/P, salivary-to-plasma; MBTFA, N-methylbis(trifluoroacetamide); [c.sub.max], peak concentration; [t.sub.max], time to peak concentration; and AUC, area under the curve.
Simultaneous determination of amphetamine, methamphetamine, 3,4-methylenedioxyamphetamine and 3,4-methylenedioxymethamphtamine in human hair by gas chromatography mass spectrometry.
Distribution of 3,4-methylenedioxymethamphetamine (MDMA) and 3,4-methylenedioxyamphetamine (MDA) stereoisomers in a fatal poisoning.
RT, retention time; UV, ultraviolet; NA, no absorption peak in the wavelength range of 210-350 nm; MDA, 3,4-methylenedioxyamphetamine; MDMA, 3,4methylenedioxymethamphetamine.

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