Identification

• Peppermint grows throughout North America and Europe, and the leaves can be dried and used in tea and as an herb to flavor foods.
  
  

Uses

• Peppermint oil is used for several ailments and conditions, such as indigestion, nausea, cold symptoms, headaches, muscle and nerve pain, and irritable bowel syndrome. It is also used to eliminate bad breath.
  
  

Types

• According to a study in the journal Phytomedicine, peppermint can be taken in very small amounts--50 mg, three times a day--in its capsule form. It can also be taken as a liquid. For muscle aches and nerve pain it can be combined with mineral oil for use as a topical agent.
  
  

Side Effects

• Possible side effects of ingesting peppermint oil are heartburn, nausea and allergic reactions, such as rash, swelling of the mouth or breathing problems. Taking peppermint oil in capsule form may increase the risk of nausea and heartburn.
  
  

Cautions

• Do not use peppermint oil if you suffer from heartburn or gastroesophageal reflux disease (GERD), if you are pregnant or nursing, or if you have gallstones. Do not use the oil near infants as it can cause respiratory spasms.