Hexahydrocannabinol, a hydrogenated derivative of cannabinol, first came to the Czech Toxicological Information Centre (TIC) following reports of poisonings in May 2022. We conducted a retrospective observational study examining self-reported cases of hexahydrocannabinol and hexahydrocannabiphorol exposure reported to the TIC from May 17, 2022, to April 30, 2024. Of 236 cases reported, 40 (17%) were excluded. The median age of patients was 18 years (range 1.5-73), with a male predominance of 55.8%.
