Does mixing drinks make you more drunk?

"Beer before liquor, never been sicker; liquor before beer, you're in the clear." It's one of the most repeated bits of drinking folklore going around — and, like most folklore, it doesn't survive contact with the evidence. Switching between beer, wine and spirits doesn't have some special power to get you drunk or wreck your next morning. What does the damage is simpler and less catchy: how much alcohol you drink, and how fast.

The short answer

Mixing your drinks does not, by itself, make you more drunk or more hungover. Your body doesn't care whether the alcohol arrived as a schooner, a glass of shiraz or a gin and tonic — it responds to the total amount of pure ethanol in your bloodstream. The reason mixing gets blamed is that it's an excellent way to lose count, and losing count is how a night quietly turns into far more standard drinks than you intended.

What the science actually says

The neatest test of the "beer before liquor" rule came from a 2019 study published in the American Journal of Clinical Nutrition, cheekily titled Grape or grain but never the twain? Researchers recruited 90 volunteers and split them into three groups. One group drank beer and then wine; another drank wine and then beer; the third stuck to just one type. On a second study day, the first two groups swapped their order, so everyone acted as their own comparison.

The result? Neither the type of drink nor the order people drank them in made any measurable difference to how bad their hangover was the next day. Drinking wine after beer didn't protect anyone, and beer after wine didn't doom them. The only things that reliably predicted a rough morning were how drunk people felt and whether they had vomited — in other words, how much alcohol they'd put away.

Australian experts agree. Writing in The Conversation, researchers point out that feeling sick during or after a session is down to "the amount of alcohol consumed and the time period it's consumed over" — not the mixing. They also note the real hazard of mixing: it "reduces the likelihood you're able to keep track of how many standard drinks you've consumed."

So where did the myth come from?

Rhymes stick in the memory, which is half of why this one endures. But there's also a kernel of real experience behind it. People who "mix" often do so on big nights — a few beers at the pub, then wine with dinner, then spirits at a bar. That's not a controlled experiment; it's just a lot of alcohol over a lot of hours. The switching gets the blame, when the volume is the culprit.

There's also a pacing trap baked into the order. Start on beer and you're drinking something relatively weak and slow; move to spirits later and your alcohol-per-minute rate climbs sharply — often at exactly the point you're too affected to notice. That's a genuine reason a night can accelerate, but it's about the strength and speed of what you're drinking, not a mysterious interaction between grain and grape.

What about congeners?

One theory with a bit more science behind it involves congeners — flavour and colour compounds produced during fermentation and ageing. They're found in much higher levels in dark drinks like whisky, brandy, dark rum and red wine than in clear ones like vodka and gin. Some studies suggest congeners can make a hangover marginally worse, which is often cited as a reason "mixing" hurts.

But the effect is small and the evidence is mixed. As the earlier research makes clear, congeners "have little impact on levels of intoxication or hangovers" compared with the sheer quantity of alcohol. If you're chasing a gentler morning, drinking less will do far more than switching from bourbon to vodka. Colour is a rounding error next to total alcohol.

The one way mixing really can catch you out

Here's the twist: mixing can leave you drunker than you planned — just not for the reason the rhyme suggests. It comes down to standard drinks. A standard drink in Australia contains 10 grams of pure alcohol, and different drinks are wildly different sizes:

When you stick to one drink, you can roughly count: five schooners is about eight standard drinks. Start swapping between a schooner here, a large wine there and a couple of free-poured spirits, and the maths gets slippery fast — especially a few drinks in, when you're least inclined to do arithmetic. Mixing doesn't add alcohol, but it hides how much you've had. Our guides on counting standard drinks in cocktails and standard drinks in spirits show just how easy it is to underestimate.

Fizzy and diet mixers: a small real effect

What you mix your spirits with can genuinely change how fast alcohol hits you. According to BBC Science Focus, University of Manchester researchers found that most people absorbed alcohol significantly faster when it was served with a carbonated drink — reaching their peak level around 10 minutes sooner than with a flat version. The bubbles appear to speed alcohol out of the stomach and into the small intestine, where it's absorbed quickly.

There's a sugar angle too. A sugary mixer gives the stomach something to process, which can slow absorption slightly; a sugar-free "diet" mixer doesn't, so the alcohol can move through faster and push your peak a touch higher. None of this changes your total alcohol, and the effects are modest — but it's a fair reason a vodka-soda or a diet-mixer spirit can feel like it lands quicker than the same shot in a sweet, still drink.

What actually determines how drunk you get

Strip away the folklore and it comes down to a handful of things — none of which is the order of your drinks:

• Total standard drinks. The single biggest factor. More pure alcohol means a higher blood alcohol level and a worse hangover.
• How fast you drink. Your liver only clears about one standard drink per hour. Drink faster than that and it stacks up.
• Whether you've eaten. Food slows absorption and lowers your peak — an empty stomach does the opposite.
• Your body and sex. Weight, body composition and other factors change how the same drinks affect you — which is partly why alcohol affects women differently.

Mixing and driving

Because mixing makes standard drinks so hard to track, it's a fast route to underestimating your blood alcohol — and that matters most behind the wheel. The legal limit is 0.05 for full-licence drivers and zero for learners and P-platers, but impairment starts well before 0.05. No mixer, and no order of drinks, changes how long alcohol takes to clear: only time does that, at roughly one standard drink per hour. If your night has involved a jumble of different drinks, assume you've had more than you think, and don't drive — you can still be over the next morning. See driving the morning after drinking for how long it really lingers.

Frequently asked questions

Does mixing drinks make you more drunk?

Not by itself. What makes you drunk is the total amount of pure alcohol, not whether you switched between beer, wine and spirits. Mixing can make you drunker in practice, though, because it makes standard drinks much harder to count.

Is "beer before liquor, never been sicker" true?

No. A 2019 controlled study of 90 drinkers found the order of beer and wine made no difference to hangover severity. The rhyme is folklore. The best predictors of a bad hangover were how drunk people got and whether they vomited.

Why do people feel worse after mixing drinks?

Usually because they drank more or drank faster, not because of the mix. Switching drinks makes standard drinks hard to count, fizzy and diet mixers can speed absorption, and a "mixing" night is often just a bigger night overall.

Do congeners in dark drinks cause worse hangovers?

Congeners — higher in dark drinks like whisky, brandy and red wine — may add slightly to a hangover, but the evidence is weak and the effect is small next to the total alcohol you drink. Quantity matters far more than colour.

Does a fizzy or diet mixer get you drunk faster?

It can speed how quickly alcohol reaches your blood. Carbonation hurries alcohol out of the stomach, and sugar-free diet mixers don't slow absorption the way sugary ones do — so the drink can hit faster, though your total doesn't change.