When my daughter was making the transition from baby formula to milk it was an extremely hard process on her. She would easily get constipated and it was difficult to get her back on a regular schedule. We switched the milk we were drinking to 2% which seemed to help but even when she had too much of it, which was easy because babies love milk!, she would still get backed up. I came across the Little Tummys in a drugstore and decided to try it as it was safe for her age and was supposed to taste like chocolate. The first time she tried it, it took about an hour for her use the bathroom but it worked. She went right back to a normal schedule after that. Now I keep it on hand for those occasional days when she cant go. It is safe to use for up to a week before consulting a doctor but we have never had any problems with it not working after the first maybe second dose. They are safe to take it twice a day of needed. It comes with an easy to measure dropper on the inside making it quite mess free!