Wow, I had no idea about soy in salt, that is crazy. I find most of the foods in the organic section have sea salt and no additives. Thank goodness for the organic section of my grocery store, I never shopped there EVER before, but it's a life saver.
Introducing solids was a nightmare. I started him on oatmeal, I figured he'd like it over rice cereal as my daughter did. 2 hours later he was vomiting like crazy, over and over, he was cold, pale, sweaty, lethargic, and then the nasty diarrhea hit. He had the same reaction with barley cereal. He wouldn't even open his mouth for the rice cereal, so I had to put it in his bottle, Ped told me this. I accidentally gave him oat bran in some baby food mixture about 2 months later, and we had a repeat of the terribleness. With wheat, egg whites, and beef he does NOT vomit, but he gets hot, sweaty, nasttyyy diarrhea, and then his eczema starts to come back. This is why I believe the Alimentum did not work for him, as it 'appears' he may have Multiple Food Protein Intolerances, and for this Neocate works best. I say "appears" because my appt to FINALLY see an allergist at the huge children's hospital in Canada is not for another few weeks. My son is one of two babies on Neocate in my province, very rare. I'm still learning and trying new foods, I know there is more out there that can cause problems.
You are amazing for being able to stick so far to this diet, it would drive me mad! I hope your little one gets better, and gets proper treatment right away. I know how horrible of a feeling it is to watch them suffer so much.