oxypowder stopped working

after the liver flush, i started to feel urges to have a BM but very little comes out each time so i decided to use Oxypowder to clear things up a bit and same thing happens. very little comes out, but its liquid. i've used Oxypowder many times before so i know what to expect and this is definitely a lot less than it should be. i took 2 doses of 6 pills. what could be wrong?