Lactifiber Syrup is a type of sugar that is used to treat constipation. It works by drawing water into the intestine, which makes the stool softer and easier to pass. Lactifiber Syrup should be taken as advised by your doctor. It may be taken with or without food. You may mix it with water or fruit juice if required. Use this medicine regularly to get the most benefit and try to take it at the same time(s) each day. Your dose may go up or down depending on how well it is working. Lactifiber Syrup takes at least 48 hours to work. Talk to your doctor if you are still constipated after three days. The most common side effects of Lactifiber Syrup are abdominal distension, cramps, and flatulence. These are usually mild and temporary. You can help avoid these by drinking plenty of fluids and taking your medicine between meals. Talk to your doctor straight away if you experience severe stomach pain, severe diarrhea, mood changes, or seizures. Before taking this medicine, you should tell your doctor if you have diabetes or if you are unable to digest milk sugar (lactose intolerant). If you use this medicine over a long period of time, your doctor may want you to have occasional blood tests to check the mineral levels (e.g. potassium and sodium). Do not take other laxative medicines while taking this medicine and check with your doctor if you are pregnant or breastfeeding.