Whenever the body is in a detox mode, what it is doing is destroying and eliminating pathogens, many of which create toxins. All these toxins are being forced back into your system, and yes, can cause many flu-like symptoms.
This is why our Pure MSM is so vital to our protocols. MSM permeates all the cells in your body, opens them up, letting out toxins, pathogens, virus, fungus, which allows the CS to destroy these invaders. In permeating the cells MSM also carries vitamins/minerals to the cells, along with fresh water, which helps to restor/rebuild new programed cells. Understand that vitamins BOND to MSM, this is why MSM is such a vital nutrient to the human body.
Detox symptoms can include, headaches, low grade fever, joint/muscle pains, sore throat, sinus conjestion,diarrhea, runny nose, blurred vision, numbness, fatigue, depressed, brain fog, and even break out in rashes. This is all good because you want the toxins to come out. As toxins leave your body they can come out of your nose, eyes, ears, vagina, every pour in your body. These symptoms are referred to as a "Herxheimer's reaction", more commonly known as 'die-off' of fungus.
The best way to relieve these detox symptoms is to drink lots of 'Steam distilled water' which will aid the excretory system for elimination. When ever you do a flush or detox program we suggest drinking no less than 2 quarts of water daily, and more if you can.