First one is. Since my daughter was born, I have been breast feeding. We started her on similac advanced about a week after she was born. We did both for a few days. Until we realized it was upsetting her stomach. Took her to the doctor. We have tried about 4 diff formulas so far. Even soy milk. They all make her grassy, fuzzy. And I'm not making enough supply to seem to put milk away for when I return to work. I'm really stressing about this😔