Peppermint
“Comparing the Effect of Intranasal Lidocaine 4% with Peppermint Essential Oil Drop 1.5% on Migraine Attacks: A Double-Blind Clinical Trial”. Click image for results.
Peppermint
“Does peppermint essential oil relieve headache pain in adults with tension headaches?.” Click image for summary.
Lavender
“Effects of Inhaling Essential Oil on Headache-Related Quality of Life Among Nurses Working in Emergency and Critical Care Units.” Click image for abstract.