Were they taking less drops when they experienced herxheimer reaction (nausea and diarrhea)? Looks like they were both sick with something when they started with MMS - in such case one should start with half drop. Herxheimer reaction is a good sign of wastes or toxins being dumped into the blood in order to get them out of the body as fast as possible. In all cases if herxheimer occurs one must take less drops before raising up the dosage again ( up to half a drop).
Important diarrhea always takes out water, vitamins and micro-elements thus it is important to supplement enough all the time.
Once again If one has diarrhea after taking MMS it means that he is sick with some thing where MMS is destroying the cause till it is no longer there. Diarrhea will stop once the cause is eliminated. Healthy person can drink regular doses with no Herxheimer.
Now with dehydration, knowing that in case of diarrhea after MMS body will get the cause of disease out with water one must ALWAYS substitute enough.Better at least 3 liter a day.
The best way would be :
1. Start with smaller doses - take 1 activated drop if it gets you nauseous or you get diarrhea decrease to half a drop next time.
2. Remember to do 3 liter water. Specially if you get diarrhea - better drink all day to make sure that dehydration does not happen.
3. Take vitamins. Specially if you get diarrhea. Remember to take all supplements containing vitamin C not earlier than 2 hour after the last dose ( as vit C alongside with coffey and chocolat and other antioxidants will cancel the effect of MMS.
All this was tested on myself.
MMS sometimes might turn out to be a long road but in any case this road is the shortest to live.