I use a product called Oxypowder . When dealing with issues involving constipation. The first thing that you need to do to address the root cause of the constipation. I would try doing a colon cleanse. You might experience some short term detoxification reactions like headaches,joint pain,nausea, vomiting, and feeling tired. These are all good sign that your body is ridding itself of the toxins.You will find that different people will react differently when dealing with detoxification reactions. You might also benefit from doing a liver and gallbladder flush. You might also look into a parasite cleanse as well.Fiber can be used for a number of benefits, however, I would not use as a means of cleansing.