Tenamfetamine (also known as 3,4-methylenedioxyamphetamine (or MDA)) is a hallucinogen that acts as a serotonergic 5-HT2A receptor agonist and releases monoamines by interacting with monoamine plasmalemmal transporters. Tenamfetamine had no accepted medical use and it was scheduled as a controlled substance in the US in 1970. Despite appearing in illicit drug preparations, tenamfetamine has not been studied in humans in over 30 years. In 2010 was published article where was described the action of tenamfetaminea in a clinical trial in humans. In this trial was shown that the drug had induced mystical-type experiences and, in at least some individuals, closed-eye visions. However, during that experiment were impossible to provide strong evidence for changes in the efficacy of top-down influences on perception or acutely increased occipital cortex excitation.