Introduction
depression, psychiatric, anxiety
Lysergic acid diethylamide (LSD) is a classic serotonergic psychedelic that is widely used recreationally and increasingly investigated in patients who suffer from psychiatric conditions, such as anxiety and depression [3,4-Methylenedioxymethamphetamine (MDMA) is investigated in MDMA-assisted therapy [The primary hypothesis was that the co-administration of MDMA and LSD results in higher acute “good drug effects,” well-being, openness, and trust and lower “bad drug effects” and anxiety compared with LSD administration alone.