It works by drawing water back into the colon and increasing the fluid content and bulk of the stools making it softer and easier for the child to pass. Constipation in infants can occur after starting formula or with the introduction of solids into the diet. Before treating with a laxative it is recommended you see your family doctor or a baby health nurse. Coloxyl Oral Drops are added to a feeding bottle or fruit juice. Softening a child's stools will also help eliminate the fear of a painful toileting experience.