# Baby bottles with breast milk nutrient claims Which baby bottles are said to help keep the nutrients in breast milk intact? Dr\. Brown's Natural Flow Anti\-Colic Options\+ Narrow Baby Bottle: The vent system is proven to help preserve nutrients in breast milk and aid in digestion for a better night's sleep\. Dr\. Brown's Natural Flow Anti\-Colic Options\+ Wide\-Neck: The vent system is proven to help preserve nutrients in breast milk and aid digestion for a better night's sleep\. Dr\. Brown's Natural Flow® Anti\-Colic Options\+™ Narrow Baby Bottle: The blog says the bottle is shown to better preserve nutrients in breast milk and formula\. ### 1. [Dr\. Brown's Natural Flow Anti\-Colic Options\+ Narrow Baby Bottle](/products/ucp/drbrownsbaby-com/9139831669013) (sold by drbrownsbaby\.com) The vent system is proven to help preserve nutrients in breast milk and aid in digestion for a better night's sleep\. - Nutrient claim: The vent system is proven to help preserve nutrients in breast milk and aid in digestion for a better night's sleep\. (guide) - Anti\-colic claim: The maker states the anti\-colic internal vent system is clinically proven to reduce colic and helps reduce spit\-up, burping, and gas\. (guide) - Vent design: The silicone nipple and vent system work together to provide vacuum\-free feeding and a consistent flow rate so babies can feed at their own pace without swallowing excess air\. (guide) ### 2. [Dr\. Brown's Natural Flow Anti\-Colic Options\+ Wide\-Neck](/products/ucp/drbrownsbaby-com/9139832357141) (sold by drbrownsbaby\.com) The vent system is proven to help preserve nutrients in breast milk and aid digestion for a better night's sleep\. - Nutrient claim: The vent system is proven to help preserve nutrients in breast milk and aid digestion for a better night's sleep\. (guide) - Anti\-colic claim: The anti\-colic internal vent system is clinically proven to reduce colic and help reduce spit\-up, burping, and gas\. (listing) - Vent design: Dr\. Brown's internal venting system prevents air from coming in contact with the liquid, which helps prevent colic, spit\-up, burping and gas\. (manual) ### 3. [Dr\. Brown's Natural Flow® Anti\-Colic Options\+™ Narrow Baby Bottle](/products/ucp/drbrownsbaby-com/9139832094997) (sold by drbrownsbaby\.com) The blog says the bottle is shown to better preserve nutrients in breast milk and formula\. - Nutrient claim: The blog says the bottle is shown to better preserve nutrients in breast milk and formula\. (blog) - Anti\-colic claim: The anti\-colic internal vent system is clinically proven to reduce colic and help reduce spit\-up, burping, and gas\. (guide) - Vent design: The blog reports the anti\-colic vent system helps prevent air ingestion and the vacuum effect, reducing spit\-up, burping, and gas\. (blog) Every value in the table is a fact RoboTrunk checked, linked to the page it came from\. A dash means no checked fact fills that cell\. Prices and stock change, so this page prints neither: each product name links to its RoboTrunk page, which shows them live\. Written 2026-10-28T20:09:32.311Z. This page is published by RoboTrunk, a store built for shopping agents. The store named on this page sells the product and ships it. RoboTrunk is not the seller and never holds the money. Buying works in one path. RoboTrunk's tools prepare a checkout at that store, then hand back a short-lived link. The person approves the total; once RoboTrunk has checked the store's total against it, the person is given the checkout link to tap in their own browser, or, if the person prefers and gives permission, their agent may open the link and finish there, and payment always happens on the store's own checkout page. RoboTrunk never takes the payment or sees a card. Where the rest of this site is: - /agent/story.md is what RoboTrunk is and how it works, in full. - /agent/tools.json is every tool, its arguments and its answers. - /agent/merchants is every store you can buy from through RoboTrunk. - /products/ucp is every store's indexed products. - /products/search is one search across every store, in plain words. - [What RoboTrunk is](/agent/story.md) - [Every tool, in your browser through WebMCP](/agent) - [The tools and how to call them](/agent/tools.json) - [The stores you can buy from](/agent/merchants) - [Every store's products](/products/ucp) - [Search every store at once](/products/search)