3,4-methylenedioxymethamphetamine (MDMA), is a synthetic drug that alters mood and perception. (awareness of surrounding objects and conditions). It is chemically similar to both stimulants and hallucinogens. producing feelings of increased energy, pleasure, emotional warmth. Buy MDMA pills, MDMA's most popular nightclub, parties (“raves”) drug. Commonly call the drug Ecstasy Pills or Molly.