The trend: Nine of the top 10 food, beverage, and supplement brands ranked by the MeAgain Q3 Index, which tracks consumption and preference among GLP-1 users, offer protein-focused products, with fairlife taking the top spot. Protein also featured prominently among the top 10 products that gained popularity with GLP-1 users in the quarter, alongside three seasonal offerings.

The index combines self-reported data from MeAgain's GLP-1 users with product availability, consumer sentiment, reviews, and online conversations. Consumption growth carries the most weight in the trending products ranking.

Why it matters: Protein remains a priority for GLP-1 users, but their brand and product preferences in Q3 2026 reflected both nutritional needs and everyday consumer tastes. GLP-1 users in the US report spending an average of 11% more on high-protein foods since starting medication, per Boston Consulting Group (BGC).

GLP-1 users also seek out ingredients and nutrients beyond protein. Fiber supplement brand Metamucil debuted at No. 7 among brands, while Smartfood Fiber Pop entered the trending products list. BCG also found that users spent an average of 10% more on fiber and whole grains after starting medication. That fits with the broader rise of fiber as a wellness ingredient, driven partly by GLP-1 use and younger consumers.

Seasonal favorites won over GLP-1 users, too. Premier Protein's pumpkin spice shake, Chobani's pumpkin spice creamer, and Alani Nu's Witch's Brew energy drink all made the trending list. So did two fruit-flavored protein refreshers from Javvy, a sign that flavors and new formats matter to these users alongside functional nutrition.