Is menthol harmful to humans?
Is menthol harmful to humans? Menthol is widely used and is considered very safe. Prolonged and heavy exposure of menthol can cause severe intoxication and even death. All necessary precaution should be taken to reduce its intake or exposure. Early recognition and treatment of this poisoning is key for the successful outcome. Can menthol crystals be harmful? Serious effects include seizures, coma, and death. Menthol can cause eye and skin irritation. When used on the skin, menthol is typically diluted into a "carrier oil", lotion, or other vehicle. If a high-percentage menthol product is applied to the skin, irritation and...