Parts Used: Aerial parts
About 0.4% volatile oil (compolsed of menthol, mentone and mehtylacetate with smaller amonts of menthofuran, limonene, pulegone, cineole, bisabolene, isomenthol, neomenthol, flavonoids, phytol, tocopherols, carotenoids, betaine, choline, azulenes, rosmarinic acid, tannin.
- Cholagogue (promotes the flow of bile from the gall bladder)
- Diaphoretic (induces sweating)
- Anti-emetic (promotes the removal of worms)
Major Safety Issues:
- Peppermint oil is toxic if ingested in large doses. It may cause drowziness and violent vomiting. Cases of severe poisoning are rare.
- Pure menthol when used in the form of an inhalant for infants may cause asphyxiation.
- Preparations using 2% menthol when used as nasal drops are hazardous and may cause respiratory paralysis in infants.
- Excessive ingestion of peppermint lollies have been reported to cause arrythmia of the heart. Normal heart rate is restored when ingestion of the lollies ceases.
- Both peppermint oil and menthol even in low doses can cause mild allergic reactions such as rash and headaches in sensitive individuals.