K.P.
All three of my boys tolerated soy formulas well. I started out breastfeeding, but eventually had to supplement. With the first two I tried dairy-based formulas first, but ended up on soy because of reflux issues. When I was breastfeeding, if I ate ANY dairy (even cream in my coffee!) my sons would spit up. If I did not eat any dairy, they did not spit up.) My third son is now on Similac Isomil Advance, and tolerates it very well.