Demerol/Valium I see no reason why mother should have to pump and dump at all. After one preop dose IV, after the surgery, and after the mother is up to breastfeeding, I advise that by that time it is OK for the mother to breastfeed. Colloidal Minerals See no problem whether the minerals are in colloidal form or any other form that as long as the mother takes the normal recommended dose for the minerals that is OK to breastfeed. I know of no specific information published on "colloidal" vitamins. Frank J. Nice, DPA, CPHP