Constipation

Put 1 oz of prune juice mixed with his formula. Wait about 2-3 hours - It will work. If nothing happens after 6 hours do it again. Be ready for a mess though and don't do this daily, but to give him some relief asap this will work. You may also want to give him a dose of Mylecon with the formula because he might get some stomache cramps. Last time I did this to my baby I had to wash his mattress (had a waterproof sheet on it) and give him a bath - so consider yourself warned. He probably needs more fruits and fiber in his diet. A little bit of apple and/or grape juice daily will help keep things going. Avoid orange/citris juices though because they may cause a diaper rash. If he starts going "too much" from the juice dillute it half and half with water to get his body used to it.
They should contact his doctor becuase of his age though.

Airforcemom is right on the money, but I can't seem to get the kids to get it through their brains, they aren't consistant at all, when he finally poops they think ok all is fine and they don't follow through with the water, juice, prunes, whatever.

No one wants to admit their mom is right!!
Actually, it took a while for me to, the kayo syrup, boriac acid for eyes, it is ok to let a baby cry, but she actually had great advice & the old remidies work better than any dr. & their new ideas!
Good luck!

Your grandchild can't speak for his self. He is having a hard time (pooping) Remind your daughter what that feel like. Tell her she must add fruits and veggie to his diet. EVERYONE will be much happier.