If it does not work try colosan or Oxypowder . I have read that people with constipation have gotten helped by it. It is oxygen based and it liquefies or softens the fecal matter.
The great thing is that it is not a laxative.
While you do the bowelcleanse you can also do a livercleanse. On the day of the Liver-Flush you can skip the bowelcleanse.
This will all get your body in better working condition.
Make sure that you drink half your bodyweight in ouces of water every day.
Try to avoid processed food, soft drinks and dairy products.