Lactihep Syrup should be taken as advised by your doctor. It may be taken with or without food. You should take the amount your doctor's advice, and you can mix it with water or fruit juice if you prefer. 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’s working. Don’t take more than you’re advised to and, if you miss a dose, don’t take an extra one to make up for it. Lactihep Syrup takes at least 48 hours to work. Talk to your doctor if you’re still constipated after three days.