I have been using MMS for 9 months now and have never felt better. I looked into it for 3 weeks and I could not find anything negative about it. I am proof that there is no down side to MMS. This stuff gets rid of everything bad and leaves all the good stuff alone. I can't rave enough about the health effects. If you are sick you need to take this. It frees your body to heal itself, period. It is the fountain of health.