it is only in dogs that are prone to seizures - make sure it is low on ingredients and you should be ok -- my demi had a seizure on it as i screwed up and gave her rotisserie rosemary chicken from albertsons
so 12 hrs later she seized. However i have fed her newman's own organic for over a year no issue but i have been looking for foods without it and hardly any -- I will see today though as i wanted to try honest kitchen and gave demi a tiny bit today as it smelled pretty strong and used the force so will see how she does as that has rosemary in it too but i want to get a healthier food as newman's own has a lot of grains and she does not seem to like it - i add organic chicken and then she just eats the chicken mostly - she is a real picky eater too and it takes forever to feed her
So that being said i would only worry if your dog has a seizure or starts acting off otherwise most foods have it so you are kind of stuck unless you home cook as it is used as a preservative in most foods that are higher quality