Re: Polyvitamin Drops?
DHA and other fatty acids are added to formulas to make them more similar to breast milk. If you are concerned, then you can take a DHA supplement yourself (it is a common component in many prenatal vitamins these days) or eat more low mercury, low PCB fish. The only nutrient that doesn't pass well through breast milk is vitamin D. Either make sure your baby gets adequate sun exposure or give a single drop vitamin D supplement (Carlson D drops are great - just put a drop on your nipple and nurse). We're outside enough with skin exposed in the summer so I don't supplement; I do supplement in the winter because we are pretty bundled up. Only vitamin D, though.
K. Sophia - Mama to my little lactivore, the amazing Mr. X (11/10).