I would recommend that you buy different formulas if you are going to formulas.

Here's the reason why: my daughter would cry when we would feed her formula after an hour or so. This would happen every time. We moved her to a different one that wasn't lactose. After changing the formula we started to get sleep at night because she wasn't getting cramps from the formula.

It took us and the doctor a good min to figure out why she was always fuzzy. Hope it helps.