I got the recipe of BAKING SODA from this guy TED who contributes to EARTHCLINIC. These days, I read more of Ted's comments on earthclinic, than spending time on CZ.
I see a genius in him and his comments/explanation make a lot of sense to me.
Anyways, as a rule of thumb, I try not to overdo anything. I will do BS for a couple of days and then take a break. From all my readings and research, BS is very safe and can be taken in small amounts to increase the PH of the body.