The interactions between plant cannabinoids and a drug-metabolizing enzyme called carboxylesterase 1 (CES1) was recently published in Drug Metabolism and Distribution. Researchers at the Universities of Michigan and Florida showed that THC, CBD, and cannabinol (CBN) all inhibit CES1. CES1 is important for activating or inactivating drugs that regulate blood pressure, as well as the ADD drug Ritalin.
Scientists in at Western New England University in Springfield, Massachusetts, briefly review 10 studies that shed light on how CBD might interact with cancer treatments.
Cannabidiol (CBD) is an astonishingly safe drug. Currently, the biggest safety concern is that at high doses it can alter the metabolism of other pharmaceuticals. That means CBD might amplify the toxicity of other drugs. This has come to a fore with epilepsy treatment, since overdosing anti-epileptic drugs (AEDs) is very dangerous.
New: This report is now available in Spanish and Japanese translations! See bottom of this article for downloads.
Project CBD, a California-based educational non-profit, has published an in-depth primer on Cannabinoid-Drug Interactions for health professionals, patients, and public policy-makers. The 33-page report, summarized below, is available for free download at the bottom of the page.
Interactions between medications are very common, especially in elderly populations that medicate for pain, diabetes and high cholesterol. The geriatric population is also the fastest-growing group of medical cannabis users. Cannabis has demonstrated efficacy in treating pain, and some phytocannabinoids have been suggested for various metabolic conditions.
Cannabidiol is a safe, non-intoxicating, and non-addictive cannabis compound with significant therapeutic attributes, but CBD-drug interactions may be problematic in some cases.