Treats Asthma, Gastrointestinal Conditions, Inflammation, And Fever. , Effective For Gum Edema And Toothaches. , Lessens Arthritic Symptoms, Helps With Sleeplessness And Tension. , Peppermint Oil (A Type Of Mentha Oil) Can Also Soothe Nausea, Ease Gut Or Muscle Spasms, Fight Fatigue, Boost Memory, And Lift Mood.