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The hipp/holle brand in german formulation is the best option I could find. It is unpasteurized. They make cow or goat. It's technically not allowed in USA but there are sources online to get it delivered from Europe.

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Microbial colonization programs are structured by breastfeeding and guide healthy respiratory development, Cell (2024).

DOI: 10.1016/j.cell.2024.07.022. www.cell.com/cell/fulltext/S0092-8674(24)00782-7

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