Tag: Kirkland a2 milk

According to the USDA, certified organic dairy products must be produced without the use of artificial growth hormones. This means that Kirkland A2 milk, which carries the USDA Organic seal, is hormone-free in terms of synthetic growth hormones like rBST.

According to Costco's product listings, the retailer now offers a specific Kirkland Signature Organic A2 Protein Whole Milk. This contrasts with standard organic milk, which typically contains a mix of A1 and A2 beta-casein proteins and is not marketed with the A2 label.