Is Alcohol-Free Beer Vegan?

Published June 2026 · 6-minute read · by Rich, founder of Unhopped

Short answer

Usually, yes — most modern alcohol-free beer is vegan. The catch is finings: some beers, especially traditional cask ales, are clarified with isinglass, which comes from fish. The big alcohol-free lagers and most craft alcohol-free beers skip it, but if you're strict, it's worth a quick label check.

Beer is just water, grain, hops and yeast — so why isn't all of it vegan? The answer is what happens after brewing, and the good news is most alcohol-free beer is in the clear.

What can make a beer non-vegan

The usual culprit is finings — agents used to clarify beer. The traditional one is isinglass, made from fish swim bladders, long used to drop yeast out of cask ale. Gelatine is occasionally used too. Separately, some styles add animal products as ingredients: milk stouts contain lactose (from milk), and the odd beer uses honey. Everything else — the grain, hops, water and yeast — is plant-based.

Why most alcohol-free beer is vegan

Modern and large-scale breweries mostly clarify their beer by filtration or with vegan-friendly finings, skipping isinglass entirely. Because alcohol-free beer is a newer, largely packaged category, the vast majority is made this way — and many brands label themselves vegan outright.

Alcohol-free beers that are vegan

Plenty of popular choices are vegan-friendly, including Heineken 0.0, Guinness 0.0 (Guinness dropped isinglass back in 2018), and craft favourites from the likes of Big Drop, BrewDog and Athletic Brewing. You'll find many more across the Unhopped directory, where vegan-friendly beers are common.

Watch out for milk and pastry stouts

The main style to check is the milk stout (and some sweet ‘pastry’ stouts), which traditionally use lactose for sweetness and body — that's milk-derived and not vegan. Some alcohol-free versions are reformulated to be vegan, so don't assume either way: check the label.

How to check a beer is vegan

Look for a Vegan Society logo or a ‘suitable for vegans’ line on the label, search a database like Barnivore, or ask the brewer directly. When a beer doesn't say, the finings are the thing to ask about.

Frequently asked questions

Is Guinness 0.0 vegan?

Yes. Guinness stopped using isinglass in 2018, and Guinness 0.0 is suitable for vegans.

Is Heineken 0.0 vegan?

Yes — Heineken 0.0 is labelled as suitable for vegans, like the standard Heineken.

How can I tell if a beer is vegan?

Look for a vegan logo or statement on the label, check a site like Barnivore, or ask the brewer — the key question is whether animal-derived finings such as isinglass were used.