What is a prebiotic soda? A plain answer

Ten years ago the phrase did not exist on a shelf. Today prebiotic soda has its own section in American supermarkets, and the largest drinks companies in the world have bought their way in. In 2025 PepsiCo agreed to pay 1.95 billion dollars for one brand, and Coca-Cola launched its own. In March 2026 the best-known American brand went on sale in British supermarkets, beside the British makers already there.

What it is

Strip away the branding and a prebiotic soda is a simple idea: a fizzy drink with fibre added. The fibre is a kind that dissolves completely, so the drink looks and feels like any other soda. Most are sweetened partly or wholly with something other than sugar.

What the word means

Prebiotic is a scientific term. An international panel of scientists defined a prebiotic in 2017 as a substrate that is used selectively by the microorganisms living in the body, with a benefit to health. In everyday use it has become a name for certain fibres.

The law is more careful than the marketing. In the European Union and the United Kingdom the word is treated as a health claim, and no health claim using it has been authorised, so a brand there may state how much fibre a drink holds and may not promise what the fibre will do. In the United States, a maker of prebiotic soda agreed in 2025 to pay 8.9 million dollars to settle a case over how it had described its drinks.

Not all of them are alike

The word on the front tells you very little. In July 2026 researchers who examined 108 prebiotic sodas sold in the United States reported that, on average, the drinks contained as much sugar as fibre. Some hold a couple of grams of fibre, some several times that.

How to read the label

• Fibre, in grams. This is the reason the drink exists. Compare it with the 25 to 30 g a day that health authorities advise for adults.
• Sugar, in grams. Per bottle and per 100 ml. A drink can be high in fibre and still be sweet with sugar.
• The size of the bottle. A figure per can means little until you know whether the can is 220 ml or 355 ml.

Then read the ingredients for the sweetener, and decide whether it is one you want.

Where Goli Pop stands

Goli Pop is a prebiotic soda in a different bottle: the glass, marble-sealed bottle of India's goli soda. Each 220 ml bottle holds 6 g of added fibre. Its label says low sugar, and a laboratory report of June 2026 found less than 2 g of total sugar in 100 ml. It is sweetened with monk fruit / stevia.