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Title: Disappointed Mom
Review: I purchased these bottles based on the advertisement that they are supposed to reduce air making them ideal for babies with colic or severe gas. My daughter has colic and did horrible with the Avent bottles. In fact these bottles created such a vacuum that my daughter wasn't able to eat without difficulty and caused escessive gas. They did leak occasionally, but that wasn't such a concern for me. I've contacted Avent and demanded a refund. I would not recommend these bottles, especially if your baby has colic. I found the Dr. Brown's bottles work better or Playtex Ventaire if your baby has colic or is gassy.
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