Natural Flow Anti-Colic Options+ Narrow Glass Baby Bottle, with Level 1 Slow Flow Nipple
This glass baby bottle features an anti-colic internal vent system clinically proven to reduce colic, spit-up, burping, and gas. Its breast-like nipple promotes natural latch-on, easing the transition between breast and bottle feeding.
How scores are calculated
Materials (40%): How plastic-free the product is — raw materials, construction, and coatings.
Packaging (20%): Is the product packaged in plastic? Is it recyclable?
Transparency (20%): Does the brand disclose ingredients, sourcing, and manufacturing?
Durability (20%): How long does it last? Longer-lasting products reduce plastic waste over time.
This is a rating of this specific product only — not the company. Other products from this brand may score differently.
Last updated: April 8, 2026
This bottle is made of glass, which is a plastic-free material for the main body. However, the nipple, cap, and collar are made of silicone and polypropylene, which are plastics. It is BPA-free. The anti-colic system is a good feature for baby health.
Why We Rated It This Way
Dr. Brown's's Natural Flow Anti-Colic Options+ Narrow Glass Baby Bottle, with Level 1 Slow Flow Nipple is made from Borosilicate glass bottle, silicone nipple, polypropylene cap/collar. Certifications: IQVIA Health ProVoice Survey 2025 (Pediatrician Recommended), Parents - Best for Baby Awards - Winner 2022, Babycenter Editor's Choice - Love it Award 2021.
Chemical & Health Analysis
Each chemical of concern is broken down below — what it is, where it comes from in this product, what it does to the body, and who is most at risk.
Various plastic chemicals
Dr. Brown's Natural Flow Anti-Colic Options+ Narrow Glass Baby Bottle, with Level 1 Slow Flow Nipple
Potential for microplastic exposure from silicone nipple and polypropylene parts, especially when heated.
All health claims are based on published, peer-reviewed research from the NIH, WHO, IARC, and peer-reviewed journals. This information is for educational purposes and does not constitute medical advice.
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