Research into FM shows it is pathogenic based, there are a multitude of viral infections that can cause this as well as other type of pathogens. So if this were true then Miracle-Mineral-Supplement would be a valid choice.
Die off of pathogens from the Miracle-Mineral-Supplement would cause some herxheimer type of reactions such as aches etc. It is quite possible that the added burden of the die off could temporarily weaken the immune system thus making you more vunerable to colds etc.
Drinking adequate water along w/ other supplements that would support your body thru the detoxification process would be indicated.
JH states that some cases where deep seated infections are present may take some time before breaking thru.