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Title: Hated these!
Review: Like many of the other reviewers here I tried these because my son was spitting up a lot. With the Stage 1 nipples he wouldn't get anything out and end up getting so frustrated that he was nearly inconsolable. With the Stage 2 nipples the milk came out so fast that he choked. They need a Stage 1 1/2 nipple. I didn't use them long enough to see if they leaked or not. Very frustrating product. I solved his spitting up problem by using the orthodontic nipple by Medela.
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