Peppermint Extract relives Irritable Bowal Syndrome (IBS) pain & nausea.
Peppermint benefits IBS pain by relaxing the smooth muscles of the gastrointestinal tract through its active component, L-menthol. This antispasmodic effect reduces abdominal cramping, pain, bloating, and other IBS symptoms.  Some studies also suggest anti-inflammatory effects and stress relief may contribute to its effectiveness. 
Peppermint helps with nausea because menthol and other compounds in peppermint act as a muscle relaxant, soothing involuntary muscles in the stomach and intestines. This can help reduce spasms, cramps, and indigestion that contribute to nausea.  Peppermint also stimulates the flow of bile, which helps the body break down fats and aids in digestion.  Peppermint oil has been shown to modulate the sensitivity of nerve receptors in the gut, which may help reduce the feeling of nausea.  By influencing a neurotransmitter called acetylcholine, peppermint can promote proper gut movement (motility) for a "rest and digest" state, helping to ease digestive discomfort.