I don't have much experience with this topic, so I'm just listing
a few links here. One common question people have is whether they
will have enough milk for multiples. The answer is definitely yes for
twins and triplets, and possibly even for more. The links below
contain references to many mothers who have successfully (and
exclusively) breastfed multiples. Remember: the
more your breasts are stimulated, the more milk they make (see
also: milk supply) Twins provide twice
as much stimulation, so your breasts make twice as much milk--so it
helps to avoid supplementation as much
as possible. What the physiological limits of milk production are I
do not know, but it seems that it's no trouble for most women (with
adequate breast stimulation and
nutrition) to produce more than a gallon of milk per day--easily
enough for three or even four babies. The main impediment to nursing
multiples is the time and energy it takes, not the amount of milk you
need to produce. But then don't forget that bottle-feeding multiples
may be even more work.