Methylenedioxymethamphetamine (MDMA) (Ecstasy) By Gerald F O'Malley, DO, Grand Strand Regional Medical Center; Rika O'Malley, MD, Grand Strand Medical Center Reviewed / Revised Dec 2022 View Patient Education Symptoms and Signs Diagnosis Treatment More Information MDMA (3, 4-methylenedioxymethamphetamine) is an amphetamine analog with stimulant and hallucinogenic effects.