Product check · Guinness (Diageo)
Is Guinness Draught low FODMAP?
FODMAP score
28
Low FODMAP
Yes — despite looking like a meal in a glass, a standard serving of Guinness Draught carries a modest fermentable load. It's brewed from water, malted barley, roasted barley, hops, and yeast at just 4.2% ABV, and a 12-ounce serving runs around 10 grams of carbs — less than many amber lagers. The famous black color comes from roasting a portion of the barley like coffee beans, which changes flavor and color, not sugar content; fermentation still removes most of the fructans the barley brings in. The nitro pour is actually a point in its favor for gas-prone drinkers: Guinness Draught is charged largely with nitrogen rather than the heavier CO2 load of typical beers, so there's less dissolved gas going into your stomach with each sip. The two things to respect are serving size and the alcohol itself. US pubs pour Guinness in 16- to 20-ounce pints, which is 1.3 to 1.7 times the 12-ounce baseline — order accordingly. And alcohol remains a gut irritant independent of FODMAPs, able to speed motility and irritate the gut lining, so the second and third pint change the math more than the recipe does.
What's inside
📏 Baseline figures are per 12 oz (~10 g carbs, 4.2% ABV), but US pubs pour 16-20-oz pints — a full imperial pint is roughly 1.7 servings. The 200-ml 'glass' or a half-pint keeps one round at baseline.
Gentler alternatives
↳Irish whiskey, neat or with water — Distillation leaves no fermentable carbs, and it's as at home in an Irish pub as the stout is.
↳Bud Light or another light lager — Roughly half the residual carbs per 12 oz if you want to stay on beer for a long session.
↳Gin with soda water — A zero-fermentable-carb order available at any pub pouring Guinness.
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Scan any product — freeBased on the publicly listed ingredients at time of review; recipes change — check the label. Informational only, not medical advice. FODMAP tolerance is individual.
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