Optimum Nutrition Protein Shake + Fiber is a new ready-to-drink shake launching September 24, 2026, with 30 grams of protein and 8 grams of prebiotic fiber per bottle to support muscle and gut health. Made with ultra-filtered milk, it comes in Chocolate, Vanilla and Strawberry, and is rolling out on Amazon, TikTok Shop and select retailers nationwide.
What’s In the Optimum Nutrition Protein Shake + Fiber
Optimum Nutrition, a global sports nutrition brand owned by Glanbia Performance Nutrition, announced the launch on September 24, 2026, of its 30G Ultra-Filtered Milk Protein Shake + Fiber. Each bottle delivers 30g of protein alongside 8g of prebiotic fiber, built around ultra-filtered milk for a smoother, creamier texture than a typical whey-based ready-to-drink shake. The formula is gluten-free and contains no artificial flavors, colors or sweeteners, and it launches in three flavors:
- Chocolate — rich milk and sweet cream notes with silky cocoa
- Vanilla — milk and sweet cream paired with classic vanilla
- Strawberry — a nostalgic, old-school strawberry-milk flavor
The launch coincides with Optimum Nutrition marking 40 years as a sports nutrition brand. It also leans on a stat from the company’s own consumer research: 31% of Americans say they’re looking for more fiber in their diets than a year ago, even though nearly a third of adults still fall short of the recommended 28g of daily fiber.
“Protein will always be core to who we are as a brand, but we are committed to growing and evolving with our consumers as their needs and routines change too,” said Dave Lombardi, Senior Brand Manager at Optimum Nutrition, in the announcement. WNBA star and Optimum Nutrition partner Cameron Brink is fronting the launch, saying the shake “makes supporting my nutrition feel simple, even on my busiest days.”
Pricing: a 4-pack runs $12.99 on Amazon, while a 12-pack is $39.99 on TikTok Shop and OptimumNutrition.com. The brand says it will keep expanding into select retailers nationwide in the weeks ahead.
This isn’t the only ready-to-drink protein launch recipesncooking.com has tracked recently — see our coverage of the MET-Rx 44g Protein Shake with John Cena and the Power Crunch protein bar relaunch under Ferrero. The fiber-forward angle also echoes what we saw with Rise Wellness’s prebiotic soda, Protein Pop Balance.
Does This Affect a Recipe You’re Planning to Make?
If you regularly blend your own post-workout protein smoothie, a pre-made Optimum Nutrition Protein Shake + Fiber bottle could work as a grab-and-go swap on days you don’t have time to blend — it’s already sweetened and flavored, so treat it as a drink on its own rather than a smoothie base.
Is This Common?
Combining a high protein count with prebiotic fiber in a single ready-to-drink shake is still fairly new territory for a mainstream sports nutrition brand — most competing RTD shakes on shelves lean on protein alone. Optimum Nutrition frames the move as a response to fiber becoming “the new protein” in consumer interest, and the launch fits a broader pattern this year of legacy CPG and sports-nutrition brands adding gut-health claims to existing product lines rather than building all-new brands from scratch.
Quick Questions
How much does the Optimum Nutrition Protein Shake + Fiber cost?
A 4-pack is $12.99 on Amazon, and a 12-pack is $39.99 on TikTok Shop and OptimumNutrition.com, per the September 24, 2026 announcement.
What flavors are available at launch?
Chocolate, Vanilla and Strawberry, all made with ultra-filtered milk and no artificial flavors, colors or sweeteners.
Where can I buy it right now?
Amazon and TikTok Shop are live at launch, with the brand rolling out to additional retailers nationwide in the coming weeks.
Update Log
September 24, 2026: Article published following Optimum Nutrition’s PR Newswire announcement (September 24, 2026, 07:00 ET) of the 30G Ultra-Filtered Milk Protein Shake + Fiber launch.
