Fybogel sachets mebeverine contains both ispaghula husk a natural fibre which can help to relieve constipation and mebeverine which helps to relieve abdominal cramps and pain fybogel also helps to maintain regularity and adds bulk to stools making it easier to pass and maintain bowel regularity fybogel mebeverine is orange flavoured and gluten free and contains no chemical stimulants