Randomised crossover Phase I healthy volunteer study (n=8) assessing two oral DMT–harmala formulations with dose escalation (1.0→1.4 mg/kg DMT; 4→5.6 mg/kg harmala).
Two orally administered DMT–harmala formulations will be tested in healthy volunteers in separate single-dose sessions with a two-week washout; an interim assessment determines formulation and dose escalation.
Safety and tolerability will be assessed via AEs/SAEs, vital signs (BP, ECG, pulse) and the Integration Difficulties Scale; mental health effects via DASS-21 acutely and at follow-ups.
Two oral DMT–harmala formulations in a randomised crossover with interim safety review and dose escalation.
Initial DMT 1.0 mg/kg + harmala 4 mg/kg; after interim assessment escalate to DMT 1.4 mg/kg + harmala 5.6 mg/kg.