K.R.
Huh, I gave my son the Hyland's brand often and for a while--like months. One time I thought he'd gotten into an almost empty bottle (I don't think he did now) but I called the number on the label and the pediatrician on call called me back. He said a kid would have to eat more than 3 bottles at one time to be concerned. So, I felt a lot better.
I don't think I'd worry too much.