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Functional alcohol-free beer: what is actually in the can

By Alex Stewart

Updated 1 November 2026. Every figure links to its source below. How these pages are made.

IMPOSSIBREW Enhanced Lager
IMPOSSIBREW Enhanced Lager6 ingredients · 1,650mg
VS
Collider Lager
Collider Lager3 ingredients · 400mg
Key findingOf the UK alcohol-free beers in this report, two are brewed with functional blends. IMPOSSIBREW's Social Blend lists six ingredients at 1,650mg per 440ml can (375mg per 100ml). Collider's Unwind Blend lists three, at 400mg per 330ml can by Collider's own account. Lucky Saint, Days, Nirvana and Big Drop list none.

Blend per can, like for like

Collider's own comparison set its 400mg per can against IMPOSSIBREW's 375mg, but IMPOSSIBREW's figure is per 100ml. Per can, the numbers are 1,650mg against 400mg.

BeerBlendPer canPer 100ml
IMPOSSIBREW Enhanced Lager (440ml)L-theanine, ashwagandha root extract, magnesium citrate, citrus extract, vitamin B1, soluble plant fibre1,650mg375mg
Collider Lager (330ml)L-theanine, Lion's Mane, ashwagandha400mgAbout 121mg
Trustpilot

Ratings compared

Checked 5 Nov 2026

1IMPOSSIBREW4.4 out of 5 stars on Trustpilot4.41,036 reviews
2Lucky Saint4.3 out of 5 stars on Trustpilot4.33,734 reviews
3BrewDog4.0 out of 5 stars on Trustpilot4.02,600 reviews
Not ranked: fewer than 1,000 reviews
Nirvana Brewery4.8 out of 5 stars on Trustpilot4.8232 reviews
Collider4.2 out of 5 stars on Trustpilot4.2132 reviews
Days Brewing3.8 out of 5 stars on Trustpilot3.8146 reviews
On Trustpilot, no reviews yet: Big Drop

Brands with 1,000+ Trustpilot reviews are ranked. TrustScores and review counts from each brand's Trustpilot page, checked 5 Nov 2026.

Ingredient by ingredient

IngredientIMPOSSIBREWCollider
L-theanineYesYes
AshwagandhaYesYes
MagnesiumYes (citrate)No
Vitamin B1YesNo
Citrus extractYesNo
Soluble plant fibreYesNo
Lion's ManeNoYes

Price per 100ml

IMPOSSIBREW 48.3p on subscription (56.8p one-off); Collider 56.8p on subscription (64.4p one-off). Largest pack, each brand's own site.

Drinker-reported effects

IMPOSSIBREW's customer surveys (2,932 responses, 2024 and 2025): 72% of 775 felt relaxed; 74% of 2,157 said the relaxing effect was worth it or better than their usual drink.

Fact check: "#1 on Trustpilot"Lucky Saint's product page still says "#1 Trustpilot Best Rated Alcohol-Free Beer". That is out of date. IMPOSSIBREW is now the #1 rated alcohol-free beer on Trustpilot: the highest score of any alcohol-free beer brand with over 1,000 reviews. Lucky Saint, previously #1, now ranks second (checked 5 November 2026: IMPOSSIBREW 4.4 from over 1,000 reviews, Lucky Saint 4.3 from 3,734). Lucky Saint still has more reviews. Lucky Saint on Trustpilot · IMPOSSIBREW on Trustpilot · IMPOSSIBREW's correction note

IMPOSSIBREW in four numbers

4.4 ★Trustpilot, 1,000+ reviews. Top score of any alcohol-free beer brand with 1,000+ reviews
91/100Gold, London Beer Competition (Enhanced Lager)
+242%UK Fast Growth Index 2026: fastest-growing alcohol-free beer brand, 2023 to 2025
59/59negative Trustpilot reviews answered by IMPOSSIBREW

FAQs

What is functional alcohol-free beer?

Alcohol-free beer brewed with added ingredients such as L-theanine or ashwagandha, aimed at a particular feeling, usually unwinding.

Which functional beer has the most blend?

IMPOSSIBREW: 1,650mg per 440ml can, against Collider's 400mg per 330ml can.

Sources

All read 1 November 2026 unless stated. Prices change; check the brand's site before you buy.

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