Research and analysis

Joint position paper from the ACNFP and COT on establishing a safe upper limit for delta-9-tetrahydrocannabinol (Δ9-THC)

Statement by the Advisory Committee on Novel Foods and Processes (ACNFP) and Committee on Toxicity (COT) on a safe upper limit for THC as a contaminant in food.

• From: Advisory Committee on Novel Foods and Processes and Committee on Toxicity of Chemicals in Food, Consumer Products and the Environment
• Published: 1 July 2025

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Joint position paper from the ACNFP and COT on establishing a safe upper limit for delta-9-tetrahydrocannabinol (Δ9-THC) and its precursor as contaminants of hemp-derived products including CBD novel foods

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This page publishes a statement from a Joint Subgroup of the Advisory Committee on Novel Foods and Processes (ACNFP) and the Committee on Toxicity (COT) on tetrahydrocannabinol (THC) as a contaminant in cannabidiol (CBD) novel foods and other hemp derived products. The Subgroup was established to support the Food Standards Agency (FSA) and Food Standards Scotland (FSS) in assessing the safety of CBD and related products for consumers. THC occurs naturally in the hemp plant and can be present at low levels in CBD products. The Subgroup reviewed available scientific evidence, to evaluate potential risks and data gaps associated with dietary exposure. Based on this review, a safe upper limit of 1 microgram of THC per kilogram of body weight per day was established. Intake at or below this level is not expected to result in harm under normal conditions of use.

Published 1 July 2025