Peppermint Oil is indicated in Irritable bowel syndrome (IBS),Functional dyspepsia,Abdominal pain and spasm,Abdominal distension/bloating
ADULTS
BY MOUTH:
For a long-term disorder of the large intestines that causes stomach pain (irritable bowel syndrome or IBS): One to two enteric-coated capsules each providing 0.2 mL or 180-225 mg of peppermint oil three times daily has been used. Most trials have used specific peppermint oil products (Colpermin by Tillotts Pharma; Mintoil by Cadigroup; IBgard by IM HealthScience).
For indigestion (dyspepsia): A specific product containing 90 mg of peppermint oil and 50 mg of caraway oil (Enteroplant or Menthacarin by Dr Willmar Schwabe Pharmaceuticals), taken two or three times daily for up to 4 weeks has been used. A specific combination product containing peppermint leaf and several other herbs (Iberogast by Steigerwald Arzneimittelwerk GmbH) has been used in a dose of 1 mL three times daily. A similar herbal preparation containing extracts from clown's mustard, German chamomile flower, peppermint leaves, caraway, licorice root, and lemon balm (STW 5-II by Steigerwald Arzneimittelwerk GmbH), 1 mL taken three times daily for up to 8 weeks, has been used.
For spasms caused by a certain procedure (endoscopy) used to view the inside of the body: Enteric-coated capsules containing 187 mg of 0.2 mL of peppermint oil have been taken 4 hours before a colonoscopy.
APPLIED TO THE SKIN:
For hard, painful breasts in breast-feeding women: Peppermint oil cream or gel 0.2% has been applied 1-3 times every day for 2 weeks. Also, a solution containing peppermint oil has been applied after every breastfeeding for 2 weeks.
For spasms caused by a certain procedure (endoscopy) used to view the inside of the body: 20 mL of spray containing 0.4-1.6% peppermint oil applied to the antrum during endoscopy has been used. Also 16-40 mL of solution containing peppermint oil has been applied into the lumen during endoscopy.
For tension headaches: 10% peppermint oil in ethanol solution applied across the forehead and temples, repeated after 15 and 30 minutes, has been used.
BY ENEMA:
For relaxing the colon during a barium enema examination: 8 mL of peppermint oil was added to 100 mL water along with a surface active agent, Tween 80. The insoluble fraction was removed, then 30 mL of the remaining peppermint solution was added to 300 mL of the barium solution. Also, 16 mL of peppermint oil and 0.4 mL of polysorbate was diluted in 2 liters of purified water, then 30 mL of the peppermint solution was added to barium paste suspended in 370 mL of water in an enema bag, and 10 mL of the peppermint solution was added to the enema tubing.
CHILDREN
BY MOUTH:
For a long-term disorder of the large intestines that causes stomach pain (irritable bowel syndrome or IBS): One or two enteric-coated capsules containing 0.2 mL of peppermint oil per capsule (Colpermin by Tillotts Pharma) has been taken three times daily for 2 weeks by children aged 8 years and older.
Peppermint oil is relatively contraindicated in patients with hiatal hernia or significant gastroesophageal reflux disease, because its effect on the lower esophageal sphincter can lead to exacerbation of symptoms. Peppermint oil has been used to trigger menstruation and should be avoided during pregnancy
allergic reactions,burning mouth syndrome
diarrhea with anal burning,flushing
headache,heartburn,mouth ulcers,rash,respiratory collapse,skin irritation,inflammation of the kidney
difficulty breathing (pediatrics) from topical use
difficulty speaking and breathing (pediatrics)
Serious side effects of Peppermint Oil include:
acute renal failure (from overdose)
Some women have had success managing headaches in pregnancy with peppermint oil. Peppermint oil also can be helpful for nausea, nasal congestion and muscle aches. Peppermint oil inhalation has even been found to be helpful for postpartum women who have difficulty emptying their bladder.