Camila had been suffering from painful gas for several weeks before we finally tried Dr. Brown's bottles. These bottles have a special insert that allow for air to escape while the baby is eating. My mom had strongly recommend them as they seemed to work on my niece, but I was skeptical. She was right. Since we got them last week Camila's gas has decreased significantly. She's still gassy - though now it seems most of her gas is intestinal rather than stomach - but it's nowhere as intense as it was before. Now I wish I would have bought them sooner.