Mdma has become widely known as ecstasy (shortened e, x, or xtc), usually referring to its tablet form, although this term may also include the presence of possible adulterants or … Ecstasy/mdma acts as both a stimulant and hallucinogen, producing an energizing effect, distortions in time and perception, and enhanced enjoyment of tactile experiences. Mdma (3-4 methylenedioxymethamphetamine) is a synthetic, psychoactive drug with a chemical structure similar to the stimulant methamphetamine and the hallucinogen mescaline.