Peppermint
Mentha × piperita
A widely-grown aromatic herb whose leaf and oil have strong evidence for digestive comfort, IBS relief, and tension headaches.
- Strong evidence for irritable bowel syndrome
- Eases functional dyspepsia
- Antispasmodic — relaxes digestive smooth muscle
- Topical application eases tension headache
- Provides cooling sensation via TRPM8 receptors
- Eases mild post-operative nausea
- Approved by Germany's Commission E for IBS
- Used since ancient Egypt
Active in Menthol, Menthone, Menthyl acetate, Flavonoids.
Avoid with severe GERD — relaxes lower esophageal sphincter
Avoid with hiatal hernia
Avoid with G6PD deficiency — menthol risk
Never apply menthol to face of infants — laryngospasm risk
Always dilute essential oil in carrier oil
Concentrated oil in pregnancy not recommended
Research
- Melatonin-iron oxide nanoparticles synergy enhances salt tolerance in Mentha × piperita L.
- In-vitro analysis, metabolic profiling and in-silico molecular docking analysis shows antidiabetic potential of phytofabricated cerium oxide nanoparticles against diabetes related receptors.
- Mitigation of salinity stress in Mentha piperita L. through foliar application of chitosan-salicylic acid encapsulated ZnO nanoparticles.
You might also explore
Common questions
Yes, this is one of the strongest pieces of evidence in the herbal world. Peppermint oil is approved by Germany's Commission E specifically for irritable bowel syndrome, working as an antispasmodic that relaxes digestive smooth muscle.
NIH NCCIH
Applied topically, yes. Peppermint oil on the temples has real support for easing tension headaches, largely through the cooling sensation it creates.
No, avoid it with severe GERD or a hiatal hernia. Peppermint relaxes the lower esophageal sphincter, the muscle that's supposed to keep stomach acid down, which can make reflux worse.
No, never apply menthol to an infant's face. It carries a real risk of laryngospasm, a sudden closing of the airway.