Senocalm IBS Relief & Prevention Capsules Senocalm IBS Relief & Prevention Capsules contain simethicone & peppermint oil to relieve & prevent bloating & the gas-related symptoms of Irritable Bowel Syndrome including painful cramps, pressure, fullness & indigestion. Senocalm IBS Relief & Prevention Capsules are gentle on the body & are suitable for adults & children aged 6 years & over.