It might not be a coincidence. But those supplements have been tried by numerous people here with little to show for it. Personally, they gave me perhaps a 5% improvement, whereas CB and prebiotics have giving me perhaps a 100% improvement (as in they have at least doubled my capacity). I'm convinced that the microbiome is the most effective tool we have for modulating the immune system, which is likely at the root of this illness.
It would be great if with one supplement (Clostridium Butyricum) all is solved, i hate taking all of these pills (and spend these $ ) to be honest. In fact, i just ordered Clostridium Butyricum and i will give it a try.
Personally i think that Immune system modulation is not the root cause. But we will see.