Colpermin IBS Relief Capsules contain natural peppermint oil formulated in a sustained release capsule, clinically proven to formulated in a sustained release capsule, clinically proven to provide effective, targeted relief from the symptoms of Irritable Bowel Syndrome. These capsules release peppermint oil where it is needed to relieve the symptoms of IBS including painful spasms, bloating and trapped wind, constipation and/or diarrhoea.