Not to sound rude, but this is how it's going to come out, stop self vetting. Twice now you've given or talked about giving something that you don't even know what it really does. Luckily so far neither of them won't hurt. If you don't really know what something does, don't give it, or ask first. And the CC is a food replacer, if the chin is eating it's not needed, if it's not eating then that's another issue, and probably the obvious cause of little or no poop.
Right now the biggest deal is hydration. Usually with impaction any fecal matter you get will be small amounts of diarrhea. There is a risk for stasis, which if not treated can cause death of the intestines.