Fiberlact Granules 180 gm is used to treat constipation. It contains Ispaghula husk and Lactitol which work by increasing the amount of water in the stool, making the stool softer and easier to pass. In some cases, this medicine may cause side effects such as abdominal distension, cramps, and flatulence (gas). Inform the doctor if you are pregnant or breastfeeding, taking any other medication, or have any pre-existing medical conditions.