First of all, congratulations on going down this road - if you approach it in a holistic way it can have a huge impact on your life.
I would like to say to you that you do not need to get sick ... why not cut back on the number of drops to where it is tolerable? I cannot recall if you are dealing with an urgent/aggressive health situation, but even if you are you will not be able to continue if you feel so sick. How does 10 drops sound?
And, taking 2 x doses per day of a smaller number of drops will generally keep a steady amount of chlorine dioxide in your body all the time.