Peppermint essential oil's properties

Peppermint essential oil is extracted from the hybrid plant Mentha x piperita and is among the most sold essential oils in pharmacies. It is valued for its potential analgesic, antispasmodic, and digestive benefits.

Chemical composition and effects

The oil contains menthol, which makes up 20 to 30% of its composition and is responsible for its pain-relieving and digestive effects. It also includes esters like menthyl acetate, which may have calming effects on the central nervous system.

Uses for various conditions

Peppermint essential oil is used to relieve osteo-articular pain, headaches, nausea, vomiting, and symptoms of irritable bowel syndrome. Menthol provides a cooling sensation that may interrupt pain signals through a mechanism called "gate control."

Recognition and clinical findings

The European Medicines Agency recognizes peppermint essential oil preparations applied to the forehead and temples as potentially effective for mild tension headaches. A clinical study found that a 10% menthol preparation could reduce migraine intensity.

Vasomodulatory effects

Peppermint may help regulate cerebral vascular tone, potentially alleviating migraine-related pain. For migraines, topical application is recommended, avoiding the eyes and mucous membranes to prevent irritation.

Oral use and alternatives

Oral use of peppermint essential oil is not advised due to potential dangers if ingested. Medicinal tablets or capsules are available for specific uses, while peppermint tea may aid digestion but has no effect on headaches.

Safety precautions

Peppermint essential oil must be used with caution. It is contraindicated in children under 7 to 8 years due to risks like laryngeal spasm. The European Medicines Agency advises against its use in children and adolescents under 18 for headache relief.

Contraindications and side effects

Excessive use can cause hypothermia, skin irritation, or redness. It is discouraged for pregnant or breastfeeding women and those with severe liver damage or bile duct disorders, especially when used orally.

Other mint essential oils

Field mint (Mentha arvensis), another mint family essential oil, contains more menthone than peppermint and has a stronger analgesic effect. However, it is more irritating and requires dilution before use. Peppermint remains the best documented essential oil for headache relief.