Is it safe to give kids milk from tetra-pak cartons?
Fine sometimes. For daily home milk, glass bottles or clean glass jars reduce plastic contact.
What's actually in it
Tetra Pak-style milk cartons are layered packaging: paperboard, aluminum, and plastic. The plastic layer helps keep milk shelf-stable and keeps the liquid away from the paper and metal.
That makes cartons practical for lunch boxes and travel. It also means the milk has long contact with a plastic liner before your child drinks it.
What the research says
A 2025 study in Food Chem X detected BPA in 12 of 23 milk samples across packaging types, including Tetra Pak and Tetra Brick.
A 2025 study in J Hazard Mater found plasticizers in 85% of analyzed foods and reported that exposure varied by food type, packaging, and population group.
Use shelf-stable cartons when they solve a real need, like school lunch or travel. At home, glass-bottled milk or a clean glass jar is the lower-plastic-contact routine.