Problem with constipated child

  My son Elijah Franco who will turn 4 years old this Sept suffered from constipation. At first I thought he just need to drink lots of water and it will be soon gone. As days, nights, weeks and months passed, I noticed that he is not constant in going to the loo, and everytime he poop its just small amount, though he eats a lot. 
Then I get to worried about him, we brought him to the doctor and advised us to give him "prunes" or "prune juice", Elie must have not enough fiber intake.

So this is what we bought...

Suprisingly the taste is good...but for my sweet Elie, he doesn't like the taste, so I added a little water and sugar, for him to like it. After 2 days of drinking it, Elie has a successful poop, hehe.

Another grocery item listed...

Thanks for Reading!!!