germin - I take both dom and shatavari together... No ill effects.
I started the shatavari a week ago (tomorrow is 1 week) and within a few days started leaking when I haven't leaked AT ALL, even when my milk came in. It could be any number of the things I'm taking (MMP, domperidone, shatavari) but it came after starting the shatavari that I noticed it. I'm starting to leak more and more during the day, though my pumping output is still about 1-1.5 oz which friends say is actually 'normal' for a 2 week old. I haven't really pumped in the last few days (we have yeast, nursing is painful enough!) though and I've been consistently leaking more...
oh and our test feed, we went from transfer of about 3/4 oz nursing both sides to transfering 1 1/4 oz nursing one side and sleepy nursing the 2nd. Those were done a week apart. I'll do another one next week to see how it's going. We're slowly weaning from supplementing.
I say go for it... it's cheap and you can probably find it locally. I found it at an organic market and MOM's also carried it.