Costco Introduces New Lactose-Free Milk Product

High-protein, low-sugar milk triggers excitement among Costco shoppers

Apr. 15, 2026 at 7:11pm

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A photorealistic studio still-life photograph featuring a glass bottle of Costco's new lactose-free milk product, along with a measuring cup and a few raw milk ingredients, all arranged elegantly on a clean, monochromatic background with dramatic lighting and shadows to convey the premium quality and health benefits of the new milk.Costco's new ultra-filtered, high-protein lactose-free milk offers a premium, healthier alternative to traditional dairy products.Austin Today

Costco has quietly rolled out a new ultra-filtered, high-protein, lactose-free 2% milk in select stores in Texas, with shoppers praising the long-awaited product as a highly anticipated addition. The new Kirkland Signature milk contains 50% less sugar and 50% more protein than similar alternatives, and is priced at $10.59 for three half-gallon cartons, making it a significant discount compared to competitors like Fairlife.

Why it matters

The introduction of this new lactose-free milk product caters to a growing demand for healthier, high-protein dairy options, particularly among Costco's customer base. It also highlights Costco's strategy of testing private-label products in select markets before potentially scaling distribution chain-wide based on customer response.

The details

The new ultra-filtered, high-protein, low-calorie 2% fat milk has appeared in select Costco stores in the Austin, Texas area, with plans to expand to more locations soon. The product offers 120 calories and 13 grams of protein per cup, compared to around 130 calories and 8 grams of protein in similar alternatives. Costco shoppers have praised the new milk as a significant discount compared to competitors like Fairlife, which can cost over $10 for less than a gallon at local grocery stores.

  • The new Kirkland Signature lactose-free milk product was first spotted in an early April 2026 Reddit post by a user in Georgetown, Texas.
  • Costco has confirmed the item is currently being stocked in select Austin-area stores, with plans to expand to more locations soon.

The players

Costco

A major American membership warehouse club that provides a wide selection of merchandise. Costco is known for its private-label Kirkland Signature brand products.

Fairlife

A brand of ultra-filtered milk that was one of the first major brands to popularize high-protein, low-sugar dairy products.

Aldi

A discount supermarket chain that sells its own brand of ultra-filtered, lactose-free milk as a competitor to Fairlife.

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What’s next

If sales of the new lactose-free milk perform well in its initial Texas markets, Costco could look to roll out the product to additional locations nationwide based on consumer demand.

The takeaway

Costco's introduction of a new high-protein, low-sugar lactose-free milk product highlights the growing consumer demand for healthier dairy options, as well as Costco's strategy of testing private-label items in select regions before potentially expanding distribution. The significant discount compared to competitors like Fairlife has also generated excitement among Costco shoppers.