Please use this link to access this publication. Abstract Objective: To review pharmacology, available dosage forms, efficacy, and safety of cannabis and cannabinoids in cancer patients. Data Sources: In PubMed (1965 to June 2020) the search was conducted using the search terms cannabidiol, cannabis, CBD, dronabinol, endocannabinoids, medical marijuana, nabiximols, nabilone, THC, and cancer. Abstracts from article bibliographies were reviewed. Study Selection and Data Extraction: Relevant English-language studies conducted in humans evaluating cannabis and cannabinoids for cancer treatment or related symptoms were considered. Reference lists in relevant articles, package inserts, guidance documents, and addditional articles evaluating cannabis and cannabinoids were identified. Data Synthesis: Cannabis and cannabinoid...