Poppi Soda Ingredients: What’s Actually in the Prebiotic Soda (2026)

Last reviewed: November 2026. Reflects the current U.S. 12 fl oz Poppi formula; the can photographed for this post is Raspberry Rose, and flavor differences are noted. Poppi has been owned by PepsiCo since May 2025, and current cans list 3 g of fiber (from cassava root and agave inulin) rather than the original 2 g of inulin alone, with apple cider vinegar now further down the list; older cans and older articles describe a different formula.

Poppi is the soda that sold itself as good for your gut, got sued for it, settled for $8.9 million, and was bought by PepsiCo for $1.95 billion in the same year. The label is the cleanest in this section: sparkling water, a small amount of cane sugar, a root fiber, fruit juice, apple cider vinegar, stevia, and a second fiber called agave inulin. The question isn’t whether anything in it is harmful — nothing is — it’s whether the thing on the front of the can (“prebiotic”) is backed by the amount on the back. Here’s every Poppi soda ingredients as it reads on the current can, what the research says about inulin and apple cider vinegar at these doses, and how it compares to Olipop and to the soda it’s replacing.

Quick answer: what’s in Poppi?

The full Poppi soda ingredients list

The order is worth reading closely, because it’s changed. On Poppi’s original cans, apple cider vinegar was the second ingredient and agave inulin the only fiber. On this one, cassava root fiber is third — ahead of the juice — and the vinegar has slipped to fifth, below the raspberry juice, which means there’s less of it than there used to be; agave inulin is now a secondary fiber in eighth place. Flavor changes the middle of the list: Classic Cola and Doc Pop swap the fruit concentrates for cola flavor and add caffeine. The sugar and the two fibers are constant. Note what’s not here: no high fructose corn syrup, no artificial sweeteners, no dyes, no preservatives, no phosphoric acid, and on this can no added salt or citric acid either — the sodium line reads 0 mg. It’s a short, recognizable list, and that part of the marketing is accurate.

Poppi ingredients explained

Sparkling water Fine

Carbonated water. The base, and most of the can.

Organic cane sugar 4 g added

The honest part of the label: Poppi uses a little real sugar rather than going to zero, which is why it tastes rounder than diet soda. 4 g added, 5 g total with the juice — about a teaspoon, a tenth of a Coke, and under the amount most people would notice metabolically. It’s listed second because it’s by weight; it’s not the story here.

Cassava root fiber Half the argument

A soluble fiber from the cassava (yuca) root, now the primary fiber source and the third ingredient by weight. It’s a resistant-dextrin-type fiber that passes the small intestine and is fermented in the colon, so it qualifies as a prebiotic in the same way inulin does; it’s also gentler on the gut than inulin, which is likely why PepsiCo-era Poppi leads with it. Together with the agave inulin it brings the can to 3 g of fiber — 11% of the daily value. Whether 3 g does anything you’d notice is the question the next section takes up.

Raspberry and lemon juice from concentrate Fine

Small amounts of real juice for flavor and color — the can says 5% total. Not enough to count as a serving of fruit; enough to color the drink without a dye, which is the point. Lemon juice also supplies the tartness that citric acid did on older cans.

Organic apple cider vinegar Overrated, and less of it

ACV is the ingredient Poppi was built around — the founders started by mixing it with fruit juice to make it drinkable — and it’s now fifth on the list, behind the juice, so the amount is modest and no longer the “tablespoon” the brand’s early marketing implied. The research on ACV is thinner than its reputation: small trials show a modest blunting of post-meal blood sugar when a tablespoon is taken with a carbohydrate-heavy meal, and one 12-week study found minor weight loss, but the effects are small and the studies are short. It’s acetic acid; the “mother” bacteria aren’t probiotics in any meaningful sense at this dose. Harmless, mildly acidic (so the enamel caveat applies, though less than cola), and at the amount in this can, not doing much.

Natural flavors Fine

Plant-derived flavor compounds — the “rose” in Raspberry Rose. Composition not disclosed; standard.

Organic agave inulin The other half

Inulin is a fructan — a chain of fructose molecules your small intestine can’t digest, so it reaches the colon intact and feeds bacteria there. That’s the definition of a prebiotic, and inulin is one of the best-studied. The catch is dose. Trials showing measurable changes in gut bacteria, stool frequency, or short-chain fatty acid production typically use 5 to 10 g of inulin a day, often more; Poppi’s original cans contained 2 g of inulin alone, and current cans split 3 g of total fiber between cassava and inulin, with inulin the smaller share. At that level, it’s a small contribution to a daily fiber target (the recommendation is 25–38 g), and it’s a stretch to call it a gut-health intervention. Inulin is also a FODMAP and can cause gas and bloating in sensitive people, which is the one actual side effect Poppi drinkers report — and probably another reason the formula now leans on cassava.

Stevia leaf extract Low concern

The second sweetener, making up for the small sugar dose. Stevia is a plant-derived, zero-calorie sweetener with a clean regulatory record and a slightly bitter aftertaste that the cane sugar covers. It’s the reason the drink is 30 calories rather than 100. The research on stevia’s gut-bacteria effects is mixed and small; at this dose, not a concern. It’s also the main reason Poppi tastes different from Olipop, which leans more on juice.

Vegetable juice (color) Fine

Concentrated vegetable juice — typically black carrot or beet — for the pink. A plant color, not a dye.

Caffeine (Classic Cola, Doc Pop, and two others) ~32 mg

Four flavors add natural caffeine from green tea or coffee extract, about 32 mg a can — comparable to a Coke, under a cup of coffee. The fruit flavors, including the one photographed, are caffeine-free. Check the front of the can; it’s labeled.

Is 3 g of fiber actually “prebiotic”?

Technically yes, functionally not much. Inulin and cassava fiber are prebiotics at any dose in the sense that gut bacteria will ferment them. The question is whether 3 g a day changes anything you’d notice or a lab would measure, and the research says the threshold is higher. A 2017 review of inulin trials found microbiome effects from about 5 g a day and more consistent effects at 10 g; the International Scientific Association for Probiotics and Prebiotics uses 3–5 g as a floor for a meaningful prebiotic dose. One Poppi lands exactly at the bottom of that floor. Two Poppis a day gets you to 6 g — along with 8 g of added sugar and, for some people, noticeable bloating.

The fair framing: Poppi is a low-sugar soda that happens to contain a little fiber, not a fiber product that happens to be a soda. That’s still a good thing to drink instead of a Coke. It’s a different claim from the one on the can.

The lawsuit and the PepsiCo deal

In May 2024 a class action was filed in California arguing exactly the point above: that Poppi’s “gut healthy” marketing was misleading because 2 g of inulin was too little to deliver the benefit implied. Poppi’s parent company agreed to an $8.9 million settlement in 2025, and the court gave final approval in April 2026. Poppi admitted no wrongdoing, and the settlement didn’t require reformulation — but current cans list 3 g of fiber from two sources, and the “gut health” language on packaging has softened to “prebiotic soda.”

Two months after the settlement was announced, PepsiCo completed its $1.95 billion acquisition of Poppi (May 2025). The practical effect for the label so far: a quieter reformulation — cassava fiber in, vinegar down the list, salt and citric acid out. The practical effect for the category: PepsiCo now owns both the prebiotic soda and, as of fall 2025, a Pepsi Prebiotic Cola built on the same idea — 5 g of sugar, 3 g of fiber — and Coca-Cola launched Simply Pop to compete. The “gut soda” aisle is now owned by the same companies that make the regular soda aisle.

Poppi nutrition facts

Poppi and Olipop figures are from cans photographed on the same shelf in October 2026; the shelf-stable Olipop cans read 6 g of fiber, 4–5 g of sugar (1 g added), and 40 calories. Olipop also sells a refrigerated line that lists 9 g of fiber, so the number depends on which can you pick up. Olipop’s fiber and sugar vary a little by flavor.

Poppi vs. Olipop

They’re sold as the same product and they’re not quite. Olipop‘s shelf-stable cans have 6 g of fiber — double Poppi’s — and its refrigerated line has 9 g, from a blend of several sources. It’s sweetened mostly with juice and stevia, so most of its 4–5 g of sugar is from fruit rather than added. Poppi has half the fiber of the shelf-stable Olipop from two sources, a splash of vinegar, and a cleaner, lighter taste that many people prefer. If you’re buying for the gut claim, Olipop makes the stronger case, sits inside the 5 g floor the research uses, and may also cause more bloating because of it. If you’re buying a low-sugar soda that tastes good, Poppi is the one more people reach for, and either is a large improvement on a regular soda.

Is Poppi good for you?

The concerns, ranked by evidence:

1. Bloating. Inulin is a FODMAP; people sensitive to them may notice gas from one can. The only side effect with any consistency, and likely milder now that cassava is the main fiber.
2. Teeth. Vinegar plus fruit juice is acidic. Milder than cola, still a sipping issue.
3. The claim. Not a safety concern — just that 3 g of fiber doesn’t do what the front of the can implies.
4. Everything else. Sugar at 5 g, stevia, juice, vegetable color: low concern at these amounts.

Poppi for keto, diabetes, and kids

Keto: 9 g of carbohydrate, 3 g of fiber; net carbs around 6 g, of which 5 g is sugar. Most keto approaches allow one in moderation.

Diabetes: one of the better soda choices — a teaspoon of sugar, no glucose spike to speak of, and the ACV may marginally help. Far better than regular soda; roughly equivalent to diet soda on blood sugar with none of the artificial sweeteners.

Kids: fine as a soda replacement. The fruit flavors are caffeine-free; check for the four caffeinated ones.

Cleaner alternatives

If you want the fiber to mean something: Olipop (6 g in shelf-stable cans, 9 g in the refrigerated line). If you want zero sugar with no artificial sweeteners: Zevia (stevia only, no fiber claim). If you want the ACV without the soda, a tablespoon in water does more than the can does for pennies. And if the goal is just to drink less sugar than a Coke, Poppi already does that — it’s the one case in this section where the mainstream product is the honest answer.

This article is for informational purposes and is not medical advice. Talk to a doctor or registered dietitian about your individual nutrition needs.