i was wondering the same thing...
would calcium citrate Ca3(C6H5O7)2 work?
i dont know what C6H5O7 is though...
would calcium citrate Ca3(C6H5O7)2 work?
from wiki
Calcium citrate is an odorless white powder soluble in cold water.
Calcium makes up 21% of calcium citrate by weight.
i dont know what C6H5O7 is though...