"MSG Symptom Conplex" is a label we give ourself's when were're having a problem with monosodium glutamate & it's disguises. I was taking vitalzym to better my general health & immune system. I don't remember all the benefits but some were increased energy, less tired,& much less pain.But I had to stop due to the maltodextrin in the product & most likely the protease. As for the zymitol I really didn't give it much of a chance. Cus of my msg problems I just decided to stop all suplements. But if your're looking for a enzyme I would highly recommend either product. Unless your having problems with msg than you should stay away from vitalzym.
Hope this helps...Pat Sr