Colostrum
a thin, lemon-colored liquid produced by the mother's breasts in the first day or so after giving birth. While colostrum is beneficial for a newborn infant of the same species as the one providing the colostrum, it is not beneficial for adults. Adults do not have the same capacity as a newborn animal to take up entire proteins in the GI system without digesting them first. Do not waste your money on colostrum unless you're less than 6 months old and of bovine origin.
see the Misc.Fitness.Weights FAQ: Supplements:Colostrum