Sometimes, even more than soy products, the
carageenan in many soy products can cause gastrointestinal problems. Nothing serious, from what I understand, but many people experience grumbly stomachs and flatulence from even small amounts.
I'm a vegetarian and a hyper conscious label-reader (I try to eat all organic when I can afford it) and have found that when I eat products with carageenan in them, my stomach just doesn't feel right. You may want to keep an eye on this and monitor how you feel.