How (not) to have a bad trip? A systematic categorisation of difficult psychedelic experiences

Difficult psychedelic experiences are categorized through a systematic analysis of Erowid trip reports and data from festival hazard reduction services. Diverse factors contribute to these challenging states, including substance identification errors, inaccurate dosing, reckless behavior, and environmental settings. Pre-trip planning, informed substance knowledge, and the presence of sober peers are highlighted as effective strategies for mitigating these risks. Psychedelic experiences carry potential for both profound growth and significant distress when set and setting are neglected. Avoiding substance combinations, practicing drug checking, and avoiding unnecessary exposure to high-risk environments can protect individuals. Mental preparation and integration serve as essential buffers, helping psychonauts navigate overwhelming or traumatic experiences even when initial precautions are insufficient.