Fybogel Mebeverine 10 Sachets Fybogel Mebeverine contains both ispaghula husk, a natural fibre which can help to relieve constipation & Mebeverine, which helps to relieve abdominal cramps & pain. Fybogel also helps to maintain regularity & adds bulk to stools, making it easier to pass & maintain bowel regularity. Fybogel Mebeverine is orange flavoured & gluten-free & contains no chemical stimulants.