Adverse Reactions

Ingestion of large quantities of rosemary can result in stomach and intestinal irritation and kidney damage. Allergic contact dermatitis has been associated with the plant, but rosemary is not generally considered to be a human skin sensitizer. Rosemary's constituents, monoterpene ketones, are convulsants, and have caused seizures in large doses. Rosemary is also an abortifacient.