Clinical Study to Evaluate Drug Interactions of Cannabidiol with Citalopram and Morphine in Healthy Adults

Abstract Cannabidiol (CBD) is one of the most abundant bioactive cannabinoids. Research has demonstrated CBD’s ability to inhibit metabolic enzymes like cytochrome P450 (CYP) and UDP‐glucuronosyltransferase (UGT), potentially leading to drug interactions. However, clinical knowledge gaps remain, particularly with regard to drugs that are more commonly taken by consumers of unregulated CBD products. This study aimed to characterize the effects of daily CBD consumption, at doses typical of unregulated CBD products, on the pharmacokinetics of citalopram and morphine. These two