Is it safe to store breast milk in the standard hospital-issue plastic bottle?
Based on 2 peer-reviewed studiesbaby
Verdict: Use Caution
Okay short-term. For home storage, transfer to glass.
What's actually in it
Hospital-issue bottles are usually polypropylene meant for short-term feed and transport. They're rated safe but aren't designed for weeks of fridge or freezer storage. Over time, cold milk fat slowly pulls plastic additives.
What the research says
A 2025 study in Food Chem X found BPA in most plastic baby bottles tested. A 2025 study showed microplastic release from polypropylene.
Use plastic for transport from hospital. At home, transfer breast milk into glass bottles with silicone nipples for day-to-day storage and feeding.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| Extraction of BPA from packaged milk and baby bottles. | Food Chem X | 2025 |
| Release of Nanoplastics from Polypropylene Food Containers. | J Agric Food Chem | 2025 |
What to use instead
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