If you want a sure fire way to get rid on constipation get some pitted prunes put them in a bowl and cover them with hot water, wake them in the microwave and cook until they are really soft, say 5 mins then purae(sp?) them into a paste, at first give you little one about 1.5 tablespoons of the prunes, do this twice only as too much will cause the oppiste, then to mantain put about 1 teaspoon mixed into baby rice a day and increase or decrease as nessasary.
I would try this befor using medication.

Good luck