FWIW, I've heard some anecdotal evidence that decongestants can adversely affect some women's supply, at least in their own perception. It doesn't seem impossible that the drying effect of decongestants could extend to breastmilk in sensitive individuals. No -- I don't have any references, but I've heard this from a few different women who experienced some supply problems after taking cold/allergy preparations. At any rate, it might be something to keep in mind if a Mom's supply seems to drop during ragweed season or when she has the sniffles. Diane DiCarlo LLLL Brooklyn, NY