Thanks JK, I did find the web pages of some people who dilute DMSA with water. Also I found this:

http://home.earthlink.net/~moriam/HOW_TO_buy_DMSA.html#mix_small_dose

I think if I only mix up half a day's doses at a time, I should be OK.
The ALA is leaving my system, headache and digestion are settling down. Boy that was a rude awakening.