Chemical analysis and concentrations of cannabidiol substances used for refractory epilepsy in Chilean patients. An underestimated worldwide risk

Abstract Objective: The purpose of this study is to analyze composition of HMS (homemade CBD), NLS (non‐licensed commercial products), and bioequivalent CBD (BES) collected from Chilean patients that voluntary accepted to analyze the “CBD‐substance.” Methods: Samples were collected through an open invitation for different patients to anonymously and free of charge participate in the analysis of CBD oil. The analysis of the active principle was performed using High‐Resolution Liquid Chromatography (HPLC). Results: A total of 35 samples were collected between