Bay Leaf (Laurus nobilis L.)

About

What it is and where it shows up.

Bay leaf is the dried aromatic leaf of Laurus nobilis L., an evergreen Mediterranean shrub of the Lauraceae family, used for thousands of years as a culinary spice and flavouring agent in soups, stews, marinades, and sauces. Its essential oil is rich in 1,8-cineole, eugenol, and methyleugenol, which contribute its distinctive flavour and natural preservative properties.

Safety summary

The regulatory and scientific consensus.

At typical culinary (spice) doses, bay leaf is considered safe and is FDA GRAS-listed with a long history of food use. However, the essential oil contains up to 4% methyleugenol, a compound flagged by EFSA as a suspected genotoxin and carcinogen at high concentrations, raising concern for concentrated oil or supplement forms. Bay leaf may interfere with blood sugar control and exerts CNS-depressant effects, posing risk for diabetic patients, pre-surgical individuals, and those on CNS-active medications; whole leaves are also indigestible and present a physical obstruction hazard if swallowed.

Regulatory landscape

What food-safety regulators have decided.

Jurisdiction	Status	Note
EFSA (European Food Safety Authority) (European Union)	Approved	Bay leaf and laurel leaf oil are approved as food flavourings in the EU. EFSA FEEDAP (2023) assessed laurel leaf oil for animal feed; it is authorised as a feed additive under Regulation (EC) No 1831/2003. Concentrated oil contains up to 4% methyleugenol, classified by the applicant as suspected of causing genetic defects and cancer, requiring cautious handling in high-dose applications.source
FSSAI (Food Safety and Standards Authority of India) (India)	Approved	Listed as a regulated spice (Laurus nobilis L.) under FSS (Food Products Standards and Food Additives) Regulations Chapter 2.9 – Salt, Spices, Condiments and Related Products (Version 2, 04.11.2024), with defined quality standards for moisture content, extraneous matter, shrivelled/discoloured leaves, and insect damage.source
FDA (Food and Drug Administration) (United States)	Approved	Bay leaves, sweet (Laurus nobilis L.) and their extracts are listed in the FDA Substances Added to Food inventory as GRAS, permitted as a spice and natural flavouring under 21 CFR 182.10 and 182.20; GMP quantities only; no established maximum daily intake.source

Who should approach with care

Whose guidance would steer them away.

Pregnancy — There is insufficient reliable safety data on bay leaf use at medicinal or supplement doses during pregnancy; culinary amounts are generally regarded as safe, but supplemental use should be avoided.

Lactation — Insufficient safety data exists for bay leaf at medicinal or high doses during breastfeeding; supplemental or concentrated forms should be avoided.

Diabetes — Bay leaf may interfere with blood sugar control and could potentiate or counteract antidiabetic medications, warranting medical consultation before use beyond culinary quantities.

Epilepsy — Bay leaf has CNS-depressant properties and may interact with anaesthetic and CNS-active medications; medicinal use should be stopped at least two weeks before any scheduled surgery.

Infants — Whole bay leaves are completely indigestible and present a serious choking and gastrointestinal obstruction hazard; they must never be given to infants or very young children.

Research citations

The sources behind this verdict.

1FDA. Substances Added to Food (formerly EAFUS): BAY LEAVES, SWEET, EXTRACT (LAURUS NOBILIS L.). hfpappexternal.fda.gov
2FSSAI. Food Safety and Standards (Food Products Standards and Food Additives) Regulations – Chapter 2.9: Salt, Spices, Condiments and Related Products (Version 2, 04.11.2024), 2024. fssai.gov.in
3EFSA. Safety and efficacy of a feed additive consisting of an essential oil from the leaves of Laurus nobilis L. (laurel leaf oil) for all animal species (FEFANA asbl), 2023. efsa.europa.eu
4PubMed. Bay Laurel (Laurus nobilis L.) Essential Oil as a Food Preservative Source: Chemistry, Quality Control, Activity Assessment, and Applications to Olive Industry Products, 2022. pmc.ncbi.nlm.nih.gov
5PubMed. Bay Leaf (Laurus nobilis) — Chapter in Nonvitamin and Nonmineral Nutritional Supplements, 2020. pmc.ncbi.nlm.nih.gov

Independently researched5 citations