Study: No evidence of liver toxicity from use of CBD from hemp Investigators report to FDA no evidence of liver toxicity in 839 adults consuming oral CBD Published: Updated: Tags: CBD products Researchers presented initial results from a study to the FDA in March suggesting there is no evidence of liver disease from the use of hemp-derived CBD products. The study, conducted by a team from clinical research company Validcare, aims to help the FDA to determine how to appropriately regulate CBD products. CBD, short for cannabidiol, comes from the cannabis plant. It is one of two most commonly known compounds of cannabis (marijuana), the other being delta-9-tetrahydrocannabinol (THC). It’s the THC that is associated with a “high,” not CBD.