Peppermint Oil
Indications
Peppermint Oil is used for: 
 Irritable bowel syndrome, GI tract spasm
                                              
                        Adult Dose
Oral
Irritable bowel syndrome; Gastrointestinal tract spasm
Adult: Peppermint oil: 0.2 ml tid, increased to 0.4 ml tid if necessary, for up to 3 mth. 
                                              
                        Child Dose
Renal Dose
Administration
Contra Indications
Pregnancy; cholecystitis; hepatic damage; children.
                                              
                        Precautions
Hiatal hernia, Pregnancy, lactation.
                                              
                        Pregnancy-Lactation
Pregnancy Category: avoid use
Lactation: avoid use
                                              
                        Interactions
Exacerbation of adverse effects if taken with alcohol; enteric-coated preparations containing peppermint oil should not be taken immediately with antacids.
                                              
                        Adverse Effects
Side effects of Peppermint Oil : 
 Irritation; erythematous skin rash; headache; bradycardia; muscle tremors and ataxia; heartburn; exacerbation of asthma with wheezing and dypnoea; contact dermatitis,  urticaria.
                                              
                        Mechanism of Action
The main constituents of peppermint oil are menthol (29%-48%), menthone (20%-31%) and methyl acetate (3%-10%). It relieves flatulence and colic by relaxation of GI tract smooth muscles.