Proda’s Golden Apple Protein Soda Has Two Published Labels: One With 3 Grams of Fiber, One With None. The Math Says Neither Is a Typo
The brand’s own page lists 40 calories, zero carbohydrate and no fiber. The Sprouts listing for the same can lists 45 calories and 3 grams of “prebiotic acacia fiber.” Under the FDA’s rounding rules the two panels are exactly one ingredient apart. What 3 grams of acacia would and would not do, and why the can in your hand is the only label that counts.
Proda Golden Apple protein soda (12 fl oz; $3.49 a can at Sprouts, $39.95 per 12 online) has two different published labels as of September 18, 2026. Proda's own product page lists 40 calories, 0 g carbohydrate, 0 g sugar, 20 mg sodium and 10 g protein, "not a significant source of" dietary fiber, with ingredients carbonated reverse osmosis water, whey protein isolate, natural flavor, citric acid, L-malic acid, stevia extract, fruit and vegetable juice for colour, sea salt and monk fruit extract. The Sprouts online listing for the same product lists 45 calories, 3 g carbohydrate and 3 g dietary fiber (11% DV), with "Prebiotic Acacia Fiber" as the third ingredient and sodium citrate instead of sea salt; Amazon shows the brand's 40-calorie panel as an image and a third ingredient list as text. The difference is arithmetically one ingredient: 10 g protein x 4 = 40 calories; 3 g of soluble non-digestible carbohydrate at the FDA's 2 calories per gram adds 6, and 46 rounds to 45. The brand's March 2026 launch release promised "3g of fiber" and about 45 calories, and archived copies of its homepage advertised "3g fiber" through at least May 15, 2026; the site no longer mentions fiber and no recipe change has been announced. We have not examined a physical can. Acacia is very well tolerated (no different from sugar up to 30 g a day) and its prebiotic trials used 5 to 40 g a day with an optimum around 10 g, so 3 g is untested and unlikely to be felt. Whey isolate carries roughly a tenth of a gram of lactose per can on typical specifications. Sprouts and Proda both advise relying on the label on the physical can. Educational, not medical advice.
Proda is having a good year. The protein soda launched in March, went into every Sprouts Farmers Market on April 1 at $3.49 a can, and on September 2 put out a release announcing a fall push for its Golden Apple flavour, now in the chain’s grab-and-go fridges, and billing itself as “the #1 fastest-selling protein soda in America” (the release cites no source for that). Its founders are Jeff Church, who co-founded Suja Juice, and Matthew Postlethwaite, an actor the company describes as best known for Peaky Blinders. The pitch is simple and appealing: 10 grams of clear whey protein, zero sugar, soda flavours, no chalk.
When we went to read the label, we found two of them. Proda’s own product page and the Sprouts listing for the same can disagree on calories, carbohydrate, fiber and three ingredients. We have not held a can, so this is not a story about which one is right. It is a story about what the difference is, because it turns out to be precise: the two panels are five calories and one ingredient apart, the arithmetic closes exactly, and if you are buying this drink for the fiber, or avoiding it because of the fiber, the page you read decides which drink you think you are getting.
The two panelsSame can, different numbers
| Per 12 fl oz can | Proda’s own product page | Sprouts’ online listing |
|---|---|---|
| Calories | 40 | 45 |
| Total carbohydrate | 0 g | 3 g |
| Dietary fiber | “Not a significant source” | 3 g (11% DV) |
| Protein / sugars / sodium | 10 g / 0 g / 20 mg | 10 g / 0 g / 20 mg |
| Third ingredient | natural flavor | “Prebiotic Acacia Fiber” |
| Also differs | sea salt; no sodium citrate | sodium citrate; no sea salt |
Proda’s page gives the panel twice, once as text and once as an image, and they agree: 40 calories, 0 grams of carbohydrate, 10 grams of protein, 20 milligrams of sodium, and the footer line “Not a significant source of… dietary fiber.” The ingredients are carbonated reverse osmosis water, whey protein isolate, natural flavor, citric acid, L-malic acid, stevia extract, fruit and vegetable juice for colour, sea salt and monk fruit extract. Every other flavour on the brand’s site carries the identical panel.
The Sprouts listing gives 45 calories, 3 grams of carbohydrate and 3 grams of dietary fiber, 11 percent of the Daily Value, and its third ingredient is “Prebiotic Acacia Fiber.” It lists sodium citrate where the brand lists sea salt. The Root Beer and Cherry Lime listings at Sprouts show the same fiber version, so this is the whole line, not one flavour. Amazon manages to hold both positions at once: its gallery image is Proda’s 40-calorie panel, while its ingredient text matches the Sprouts list with the acacia taken out.
The arithmeticWhy neither one looks like a mistake
Food labels are calculated, and the rules are public. Protein counts 4 calories a gram, so 10 grams is 40 calories: Proda’s number. The labelling regulation assigns soluble non-digestible carbohydrate, which is what acacia is, 2 calories a gram. Three grams adds 6, making 46, and calories under 50 are rounded to the nearest 5: that is 45, Sprouts’ number. Take the 3 grams of acacia out and the carbohydrate line falls to zero and the fiber line disappears, which is exactly what the brand’s panel shows. The two labels describe the same drink with and without one ingredient.
Ten grams of protein is 40 calories. Add 3 grams of acacia at 2 calories a gram and it rounds to 45. The two labels are one ingredient apart.
The same rules say the two cannot both describe one can. A panel may print “0 g” of carbohydrate only when a serving holds less than half a gram, and “not a significant source” of fiber only under one gram. Three grams of acacia fails both. The public record offers a partial timeline and no explanation. The March launch release promised “3g of fiber” and “approximately 45 calories”; BevNET’s reviewers, with cans in hand that month, reported the same; and archived copies of Proda’s homepage from April and May read “10g protein. 0g sugar. 3g fiber.” Today the homepage says “10g protein. Zero sugar,” and the September release does not mention fiber. We found no announcement of a recipe change. A retailer’s feed may simply be showing the launch specification, or a brand’s site may be ahead of what is in the fridge; we noted the mismatch in our protein soda guide last week and cannot resolve it from a desk.
Does it matterWhat 3 grams of acacia would and would not do
For your gut, less than the labels’ disagreement suggests. Acacia gum is among the gentlest fibers studied. A French trial found its digestive tolerance no different from table sugar up to 30 grams a day, and a 2021 study in 48 healthy adults found symptom scores “all low” even after single 20- and 40-gram doses. Nothing in the literature suggests 3 grams would be felt. The other side of the ledger is just as modest. The trial that established acacia as a prebiotic tested 5, 10, 20 and 40 grams a day and found bifidobacteria rose with “the optimal dose being around 10 g”; a 2024 trial in people with constipation-predominant IBS used 10 grams. Both involved authors employed by acacia suppliers. No one has tested 3 grams, so the honest word for that dose is untested, and “prebiotic” on an ingredient line is the ingredient’s name, not a finding. For the record, the FDA agreed in December 2021 to let acacia count as dietary fiber on labels, and the benefit it accepted was a lower blood-sugar response after meals, not anything microbial.
The rest of the can reads the same either way. Whey isolate is filtered to at least 90 percent protein, and a standard composition table puts its lactose at about half a percent, which on typical isolate specifications works out to roughly a tenth of a gram per can. Most adults with lactose malabsorption tolerate 12 to 15 grams in a sitting, so Proda’s “zero lactose” claim is sound in practice; the company is careful to add that lactose-free is not milk-free, and the drink is not suitable for a milk allergy. Ten grams of whey in a can is a light protein load, and we covered what carbonation does and does not do to bloating in the category guide.
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The takeawayRead the can, not the listing
The FDA has been watching this problem. In a 2023 request for information on online grocery labelling, the agency wrote that “there may be differences between the label on the food package and the information that is being made available online,” including “inconsistent nutrient values.” It has not issued a rule. In the meantime both companies here give the same sound advice. Sprouts’ page says: “Always refer to the physical product for the most accurate information.” Proda’s contact page says: “use the label on the can you have.”
That is the whole method. If the panel in your hand says 45 calories and 3 grams of fiber, you have the acacia version: a gentle fiber at a dose below anything trialled. If it says 40 and no fiber, you have a protein drink and nothing else, which is a perfectly good thing to be. If you count fiber, count what the can says. Proda had no involvement in this article, which is educational, describes what the cited listings, releases and trials say as of September 18, 2026, and is not medical advice; we will update it if the company clarifies which label is current.