For years, “soda” and “nutrition” lived in separate cultural zip codes: one was a treat, the other a regimen. Now they’re converging fast. As functional sodas gain share and credibility, a new offshoot is stepping out of niche fitness circles and into everyday shopping carts: protein sodas.
The shift isn’t happening in a vacuum. Big beverage companies are buying, building, and launching their way into “better-for-you” carbonation, while retailers reorganize shelves around protein. Together, these forces are turning what once sounded like a gimmick, carbonated, soda-like drinks with meaningful protein, into a mainstream format.
From “better-for-you” fizz to a functional soda land grab
The mainstreaming story starts with functional soda momentum broadly, especially prebiotic sodas that borrow soda cues, flavor, branding, bubbles, while promising a health-adjacent benefit. The category’s rise has been fast enough that incumbents can’t ignore it, and big acquisitions have become the clearest signal that carbonation is being “reimagined,” not replaced.
In May 2025, PepsiCo said it closed its acquisition of Poppi for $1.95B, including $300M in anticipated cash tax benefits (net $1.65B). PepsiCo positioned Poppi as part of its push into “functional” beverages, an explicit acknowledgement that modern soda competition isn’t only about taste and distribution anymore, but about perceived wellness too.
PepsiCo Beverages U.S. CEO Ram Krishnan framed the deal as a long-term portfolio move, stating that “poppi represents a compelling strategic fit…” The subtext is hard to miss: when a legacy soda giant uses M&A to buy a “functional soda” brand, it validates that the consumer demand isn’t a fad confined to specialty stores.
Incumbents respond: prebiotic colas and new in-house brands
Acquisitions are only half the story; rapid copy-and-compete behavior is the other. CNBC reported that Pepsi followed the Poppi deal by launching Pepsi Prebiotic Cola, formulated with 3g prebiotic fiber. That’s a meaningful shift in how a flagship soda brand can be framed, still cola, but with a functional hook.
Coca-Cola also stepped into the arena. CNBC reported that Coca-Cola launched Simply Pop, a prebiotic soda containing 6g prebiotic fiber. The competitive comparison has become part of the narrative too: Simply Pop’s fiber is higher than Poppi’s (and lower than Olipop’s, per CNBC), turning label stats into a mainstream talking point.
This “functional arms race” matters for protein sodas because it normalizes a new consumer expectation: carbonation can carry benefits. Once shoppers accept fiber-forward sodas as legitimate, the leap to protein-forward sodas feels less weird, and more like the next rung on the same ladder.
Scale signals: Olipop’s numbers and what they imply for the aisle
It’s easier to dismiss a trend when it’s small. But CNBC reported that Olipop raised a $50M Series C valuing it at $1.85B, and cited annual sales of more than $400M with profitability. Those figures don’t just indicate a strong brand, they suggest a category with real velocity.
When functional soda brands approach that scale, grocery buyers and beverage distributors take note. Shelf resets, endcaps, and cooler placements become more plausible, because the risk profile changes: what used to be an “experiment” begins to look like a reliable growth segment.
Protein sodas benefit from that groundwork. The consumer is already being trained to look for macros and functionality on a can that resembles soda, and retailers are already carving out space for drinks that compete with traditional soft drinks on experience while competing with supplements on claims.
Protein soda goes “nationwide”: the retail mainstreaming moment
The clearest mainstream signal is not a TikTok spike, it’s broad retail rollout. Sports Business Journal reported that sports nutrition brand Don’t Quit is launching sugar-free protein sodas nationwide at major retailers including Albertsons, CVS, Safeway, and Walmart, starting in July 2025. That’s not niche distribution; it’s the center of American retail.
SBJ also reported that Don’t Quit was control owned by Keurig Dr Pepper and was closing a $15M funding round led by Solyco Capital while launching the protein soda line. Strategic ownership plus new capital is a strong institutional vote that protein soda is not just a novelty SKU, it’s a bet on a new format.
Just as important is how retailers are responding. Don’t Quit CEO Mark French said retailers are “literally making protein destination aisles.” When protein becomes a destination rather than a single shelf, a soda-like protein can live in multiple places, near fitness drinks, near grab-and-go, and even adjacent to traditional soda.
Why protein, why now: demand data and a 2026 wellness narrative
The protein boom is larger than any single brand. SBJ cited Circana data showing sales of protein drinks and supplements up 18% last year. In that environment, brands look for “white spaces” where protein can be delivered in a more enjoyable ritual than a heavy shake.
At the same time, lifestyle media is reframing functional beverages as normal daily tools rather than gym-only products. Vogue listed “Functional Nutritional Drinks” as a 2026 wellness trend and explicitly referenced consumers embracing protein sodas as part of broader wellness integration.
Together, the data point and the cultural story reinforce each other: consumers want protein, and they also want it in formats that match their everyday habits. A cold, fizzy can reads like refreshment first, and nutrition second, which is exactly what helps it cross into mainstream behavior.
Costco and the “clear, crisp” protein soda experience
If mass retail is the test, Costco is often the proof. Business Wire reported that Genius Gourmet rolled out its 30g Sparkling Clear Protein Drink nationally at Costco warehouses starting July 31, 2025, positioning it to drink “more like a crisp soda.” That phrasing matters: it’s about taste and texture parity with soda, not just macros.
The same announcement highlighted the beverage’s specs: 30g ultra-filtered protein, zero sugar, zero lactose, and 130 calories, with a “light, sparkling texture.” Those are mainstream-friendly numbers presented in mainstream-friendly language, aimed at overcoming the “protein = thick and chalky” stereotype.
The brand’s President, Pete Vas Dias, put it bluntly: “Protein doesn’t have to taste like chalk to be effective.” That is the central consumer hurdle, and Costco distribution suggests the industry believes the hurdle can be cleared at scale.
Social proof and price visibility: when “gym drinks” become pantry staples
Mainstream often arrives through a combination of availability and conversation. Food & Wine reported that the Costco-exclusive clear, carbonated protein drink created buzz on TikTok, noting its 30g protein, 0 sugar, 130 calories, and Costco pricing of $28.99 for a 15-count case. In other words: it’s being discussed like a household bulk buy, not a specialty supplement.
Delish also reported strong shopper reactions, including people calling the drink “revolutionary,” and cited an online price of $32.90 for a 15-pack. Those callouts, buzz plus easy-to-compare pricing, help normalize the idea that protein soda is a repeat purchase item rather than a one-time curiosity.
Once a product sits in a familiar channel (Costco), carries familiar cues (a can, carbonation, “crisp”), and gets familiar treatment (reviews, deal talk, bulk buying), the category moves from “trend” to “habit.” That’s the behavioral shift brands are chasing.
Innovation, IP, and differentiation: the early scramble to own “protein soda”
As more entrants arrive, brands need a defensible edge. SBJ reported that Don’t Quit has a patent for its carbonated, ready-to-drink protein, aiming to be early in the “budding protein soda segment.” Whether patents ultimately shape the category or not, the intent is clear: companies expect competition and want moats.
Other players are competing through straightforward positioning. Bucked Up markets a true “Protein Soda” with soda-like carbonation, claiming 25g whey isolate, 0 sugar, and 100 calories per can, framed as an alternative to heavier shakes. The selling point isn’t only nutrition, it’s drinkability.
Bucked Up also states its Protein Soda won “Best Innovation” at the 2025 Arnold Sports Festival (a brand claim). Awards, patents, and premium macros all function as trust-building tools in a new segment where consumers still ask the same question: “Is this real protein… and will it taste like soda?”
Where functional soda and protein soda converge next
The functional soda wave continues to broaden, pulling more mainstream retailers into the “healthier-seeming soda” playbook. Delish reported that Trader Joe’s launched two prebiotic sodas, Cherry Cola and Strawberry Vanilla, underscoring that store brands and curated grocers see functional soda as a permanent fixture, not a seasonal experiment.
Even Poppi’s marketing cadence increasingly resembles classic soda playbooks: new flavors, fandom, and buzz. Delish reported Poppi teasing a launch dated January 5, 2026, with fans speculating about a cherry/Shirley Temple-style flavor. That’s a reminder that “mainstream” isn’t just what’s in the can; it’s how brands create rituals and anticipation.
Protein soda is likely to borrow from both worlds: the fun, flavor-forward mechanics of soda marketing and the metrics-driven framing of sports nutrition. The winners will make the product feel like a treat while quietly meeting the consumer’s macro goals.
Protein sodas are going mainstream because the infrastructure is finally in place: functional soda has trained consumers to look for benefits in bubbly cans, incumbents have validated the space with acquisitions and launches, and retailers are building aisles around protein as a daily need. When distribution expands to Walmart, CVS, and Costco, the category stops being a niche bet and starts being a normalized option.
The next chapter will be defined by taste, texture, and trust, plus how well brands balance “soda-like” pleasure with functional credibility. With big beverage money flowing into functional soda, strong category growth in protein, and clear, carbonated formats gaining social and retail proof, protein soda looks less like a quirky crossover and more like a new beverage staple.
