Posted by UPSWING UK
on November 11, 2026
You start the evening with a pint, move on to a glass of wine with dinner, and finish with a gin and tonic before last orders. The next morning, one question comes up almost automatically: was it the mixing?
Rules such as “beer before wine” and “never mix dark and clear spirits” are repeated in pubs and at house parties across the UK. But beer, wine, gin, rum and whisky all contain the same intoxicating alcohol, ethanol. And in a 2019 randomised crossover trial, changing the order of beer and wine did not meaningfully change hangover severity.
So what does matter? In this guide, we look at what really happens when you mix alcohols, how to count UK units across different drinks, what congeners and mixers can change, and how to plan your next night out around the measure rather than the myth.
Quick Answer: Does Mixing Alcohols Make Hangovers Worse?
Mixing alcohols has not been shown to reliably worsen a hangover simply because you combine beer, wine or spirits; The amount of alcohol you drink matters more. Switching drinks can make that amount harder to track. Drink composition can also influence your experience, including congeners and mixers, but there is no proven drinking order that protects you from a hangover.
The useful question is what changes when you switch drinks. Moving from beer to cocktails might change the alcohol dose, the pace, the ingredients—or all three. Separating those changes explains much more than counting how many types of alcohol you tried.
What Actually Happens When You Mix Alcohol?
Beer, wine, gin, rum and whisky all contain the same intoxicating alcohol: ethanol. Changing the source does not create a new category of intoxicant. Your body is still dealing with the ethanol you have consumed across the evening.
There are three different situations hidden inside the phrase “mixing alcohol”:
| What you are mixing | What changes | The useful question |
| Different drinks across an evening | Serving size, strength and possibly pace | How much alcohol have I had altogether? |
| Several spirits in one cocktail | The sum of its alcoholic ingredients | How many measures are in this glass? |
| A spirit with a soft drink | Dilution, taste and mixer composition | Has the alcohol amount changed, or only the volume? |
Adding tonic to gin makes the drink less concentrated, but does not remove any of the gin’s alcohol. Likewise, two half-measures of different spirits contain the same ethanol as one full measure of either, provided their strengths are equal.
That distinction helps explain why a complicated cocktail is not automatically stronger than a simple one. The recipe matters; the number of ingredient names does not tell you the dose.
Does the Order of Beer, Wine and Spirits Matter?
The familiar beer-before-wine rule has been tested. A 2019 randomised crossover trial compared beer followed by wine, wine followed by beer, and single-drink conditions. Changing the order did not produce a meaningful difference in hangover severity. Participants’ perceived drunkenness and vomiting were more informative predictors.
This is evidence against using drink order as a protective strategy. It does not establish that every cocktail recipe, drinking pace and personal sensitivity produces identical results.
Real-world surveys sometimes find that people who mix more drink types report worse next-day symptoms. That observation deserves attention, but it cannot isolate what caused the difference. An evening involving several drinks might also involve less food, later sleep or a different pace. Some observational findings have linked variety with poorer clear-headedness without finding the same pattern across every symptom.
The practical interpretation is straightforward: a bad experience after mixing can be real without proving that the combination itself caused it. “What else changed that night?” is a more useful follow-up than memorising a different order.
Count the Alcohol, Not Just the Glasses
In the UK, units provide a common measure across drink types:
UK units = volume in millilitres × ABV percentage ÷ 1,000.
For a cocktail, calculate each alcoholic ingredient separately and add the results. Include liqueurs, fortified wine and any alcoholic mixer.
| Example serving | Calculation | UK units |
| 330 ml beer at 5% ABV | 330 × 5 ÷ 1,000 | 1.65 |
| 175 ml wine at 13% ABV | 175 × 13 ÷ 1,000 | 2.28, rounded |
| 25 ml spirit at 40% ABV | 25 × 40 ÷ 1,000 | 1 |
| 50 ml spirit at 40% ABV | 50 × 40 ÷ 1,000 | 2 |
| Cocktail containing 25 ml gin and 25 ml vodka, both 40% ABV | 1.00 + 1.00 | 2.00 before other alcoholic ingredients |
These are worked examples, not recommended servings. Actual pours and strengths vary.
Consider one of those beers, one wine and a double spirit: together they contain about 5.93 units. Three of the example beers contain 4.95 units. Both evenings could be described as “three drinks”, but the first contains about one unit more.
This comparison is arithmetic, not a prediction of anyone’s hangover. It shows why drink counts can conceal a difference before mixing even enters the discussion. Switching categories also makes it easier to miss a double measure, a strong beer or a wine glass that keeps being topped up.
UK guidance advises adults who drink regularly to stay within 14 units a week, spreading that amount over at least three days. That weekly figure is not an allowance to save for one evening.
Does Mixing Alcohol Make You Drunker?
Switching from one spirit to another does not multiply the ethanol already consumed. What can change intoxication is how much alcohol reaches your bloodstream and how quickly.
A shot added after several beers adds another dose to a small volume. A large cocktail may be finished as quickly as a weaker drink even though it contains more alcohol. These are plausible ways switching drinks can change an evening without requiring a special reaction between liquors.
Mixers can also affect absorption. In a small study involving 21 participants, a carbonated mixer accelerated absorption in some participants, while others showed no increase or a decrease. That variability matters: “fizzy always means faster” is too simple.
Drinking with food also changes absorption compared with drinking on an empty stomach. The same drinks can therefore feel different across two evenings. Neither glass count nor drink order captures those circumstances.
When evaluating your own experience, distinguish feeling drunk during the evening from feeling unwell the following morning. A study measuring breath alcohol shortly after a drink is answering a different question from a study measuring next-day headache or nausea.
Does Mixing Dark and Light Liquor Matter?
There is no established rule that dark and clear spirits become especially problematic when combined. However, their non-ethanol ingredients can differ.
Congeners are compounds associated with fermentation and production that contribute to a drink’s character. Some darker spirits contain more than some clear spirits. In a controlled study of 95 young adult heavy drinkers, bourbon produced worse reported hangovers than vodka at comparable intoxication levels.
The distinction was about the drinks’ composition, not a test showing that combining their colours was harmful. A review of congener research also found that ethanol itself had a stronger influence on hangover than congeners.
Importantly, the bourbon study did not find a corresponding bourbon-versus-vodka difference in the measured next-day cognitive impairment. Feeling less rough is not a reliable way to establish that your attention or reaction speed has recovered.
Colour is consequently a poor shopping guide for a guaranteed better morning. It can suggest a possible compositional difference, but it cannot tell you the effect of a particular product, pour or evening. Choosing clear spirits while increasing the alcohol dose defeats the purpose of focusing on congeners.
Do Sugary Alcoholic Drinks Cause Worse Hangovers?
Sugar is often blamed when the last drink was a sweet cocktail. But sweetness alone does not establish why someone feels worse. A fair comparison would keep the alcohol dose, drinking speed, food and sleep similar, then examine what changing the mixer does.
Sweetness can also make a drink’s strength difficult to judge by taste. That is a practical reason to check its recipe; it is not proof that sugar directly causes a more severe hangover.
A Diet Mixer Is Not Automatically a Gentler Choice
Small controlled studies have found higher breath alcohol concentrations with artificially sweetened mixers than with sugar-containing mixers when the alcohol dose was the same. Differences in stomach emptying help explain why mixer composition can matter.
Those experiments measured alcohol absorption and related short-term effects. They did not demonstrate that sugary mixers prevent hangovers, or that diet mixers invariably worsen them. Choosing a mixer for sugar or calorie preferences and estimating intoxication are separate decisions.
| Claim about mixers | What the evidence supports | What to check instead |
| “Sweet cocktails always cause worse hangovers” | Sweetness alone does not establish the cause | Alcoholic ingredients and total measures |
| “Diet mixer means less intoxication” | Some studies found higher breath alcohol with diet mixers at the same dose | Alcohol quantity, food and pace |
| “More mixer cancels out a double” | Dilution does not remove ethanol | Whether the spirit measure changed |
| “An energy drink keeps me sober” | Caffeine does not reverse alcohol impairment | Avoid using alertness to judge sobriety |
Energy drinks introduce another variable: caffeine. It can make you feel more alert without reducing alcohol’s effects, potentially encouraging further drinking. A caffeinated cocktail should therefore not be treated as a way to counteract earlier drinks.
Can Mixing Alcohol Make You More Likely to Throw Up?
Vomiting can follow excessive drinking with one type of alcohol or several. Alcohol can irritate the stomach, and a rapidly increasing dose can make you acutely unwell. Mixing is not required for either to happen.
If nausea begins after switching drinks, look at the additional alcohol and timing before assuming that wine and spirits were incompatible. Changing back to beer will not reverse what you have already consumed. Stop drinking alcohol rather than trying to find a combination that settles your stomach.
In the UK, call 999 if you suspect alcohol poisoning, including someone becoming unconscious, having a seizure, or breathing slowly or irregularly. Stay with them; if unconscious but breathing, use the recovery position and follow the call handler’s instructions. Do not try to make them vomit or leave them to sleep it off.
What Alcohol Should You Not Mix?
There is no evidence-based blacklist of ordinary beer–wine–spirit pairings that answers the hangover question. Alcohol mixed with medicines or other drugs is a different issue with genuine interaction risks.
Opioids, benzodiazepines and other sedating medicines can combine with alcohol to suppress breathing. Check your medicine’s instructions and ask a pharmacist about the specific product. Swapping whisky for wine does not remove an interaction with ethanol.
For ordinary drinks, focus on the actual ingredients and amounts. An elaborate name, pale colour or familiar brand gives less useful information than the measures in the glass.
A More Useful Plan for Your Next Evening
Before ordering, decide on the amount you intend to drink. Ask whether spirits are singles or doubles, check beer strength and choose a defined wine measure. If you change drink type, update the total rather than starting a new mental count.
Eat beforehand, give yourself time between drinks and include alcohol-free options. A water or alcohol-free drink is most useful when it replaces an alcoholic round or slows the pace; adding it alongside an unchanged amount of alcohol does not subtract that alcohol.
If one beverage repeatedly disagrees with you, choosing something else is reasonable. To understand the pattern, record the actual amount, when you ate, when you stopped drinking and how you slept. Avoid drawing a sweeping conclusion from an evening when all those things changed together.
Where Supplements Fit
If supplements are part of your routine, compare the ingredient label and pack size on their own merits. The UPSWING Starter Kit is the smaller, three-sachet option; The UPSWING Box contains 30 capsules. These offer different purchase sizes for readers comparing the range.
Neither format establishes that mixing drinks becomes safer or that a hangover will be prevented. For a practical product choice, review the current label and choose the pack that fits your needs; keep decisions about drinking quantity separate.
Frequently Asked Questions
Can Two Drinks Give You a Hangover?
Yes. “Two drinks” might mean two small beers or two large, strong cocktails, and individual responses differ. Work out the measures and strengths before treating the drink count as a meaningful comparison.
Is Mixing Vodka and Gin Different from Mixing Beer and Wine?
The flavours and alcohol concentrations differ, but both combinations add ethanol. For vodka and gin, add the measures together. For beer and wine, account for their different serving sizes and ABVs.
Is It Better to Stick to One Type of Alcohol?
It can make tracking easier, especially with a consistent serving size and strength. That is a useful organisational benefit, rather than evidence that one type protects against the effects of drinking too much.
Does Expensive Alcohol Prevent Hangovers?
Price is not a dependable measure of alcohol dose, congener content or your response. An expensive double still contains more ethanol than a single of the same strength. Choose for taste rather than an assumed hangover advantage.
Does Adding Ice Reduce the Alcohol in a Cocktail?
Melting ice dilutes the drink. If you finish the whole glass, you still consume the alcohol originally poured into it. Only changing how much alcoholic liquid you consume changes that dose.
Should You Switch to Beer When You Start Feeling Drunk?
Switch to an alcohol-free drink rather than adding another alcoholic one. Beer still contributes ethanol, and changing categories does not undo earlier drinking.
Make the Next Choice About the Measure
At your next order, ask how much alcohol is in the serving and how it changes your running total. That gives you something concrete to act on—whether the evening involves one kind of drink or several.
