S.B.
My three year old went through same experience. Milk of Magnesia was difficult to get her to consume. Per our pediatrician's advice, we put our 3 year old daughter on over the counter "Miralex" that we mix in her morning apple juice. We also spend 15 minutes on the potty after lunch or dinner, reading books. This helps child get attention and time with parents and encourage elimination. This system is working very well. She is no longer getting constipated which hurt her, causing a vicious cycle.