Hm, well since I live in the US where the water is fluoridated it makes sense to take more than 12.5mg which is the amount the organs need, yet not what may be needed to eliminate fluoride, bromide etc which enter our bodies everyday.
I went down to 25mg and then 12.5mg for the past two weeks or so from taking 100mg for about two years, and last couple days I felt my body desired more again. I took 50mg today and just saw Dr. Brownsteins experience who also takes that amount daily. Thanks for posting this.