Prunes or Prune juice are the best for constipation. But you can also go to the vitamin store, maybe some of those international stores and get a tea, there are some teas that help clean you and send you to the bathroom quickly too. and if worse comes to worse go to Walgreens, etc and by so of those laxatives chocolates they help a lot. But the natural resources are the best.
The prune and the tea are what works for me. If constipation for children then try the prune and prune juice