Does Alcohol Raise Your Blood Pressure Reading? How Long?
A few drinks can lower your reading for up to 12 hours, then raise it the next day. Regular heavy drinking lifts your baseline. Here's when to measure.
This article is educational content, not medical advice. Always talk to a healthcare professional about your blood pressure.
The thresholds on this page follow the ACC/AHA guideline used in the United States (set in 2017 and kept in the 2025 update), which sets high blood pressure at 130/80 mmHg. Other bodies differ: ESH in Europe and NICE in the UK still define it at 140/90 mmHg. Check the guideline your own clinician uses.
Yes, though at first it usually goes down. After two or three drinks, your blood pressure often reads slightly lower for the rest of the evening, then rises above normal from roughly 13 hours after drinking, while your pulse stays up for about 24 hours. Regular heavy drinking goes further and raises your everyday baseline, which is a real change rather than a measurement quirk.
The clearest timeline comes from a 2020 Cochrane review of 32 randomized trials with 767 participants, most of them healthy men. With a high dose of alcohol (more than 30 grams, a little over two US standard drinks), systolic pressure fell by about 3.5 mmHg within six hours and stayed about 3.7 mmHg lower at 7 to 12 hours. From 13 hours onward the direction flipped: systolic rose by about 3.7 mmHg and diastolic by about 2.4 mmHg. Heart rate was higher throughout the full 24 hours.
Mayo Clinic adds that more than three drinks in one sitting temporarily raises blood pressure, and repeated binge drinking can lead to long-term increases.
What happens to your reading hour by hour?
The early dip is likely because alcohol relaxes and widens blood vessels at first. As your body clears it, the pattern reverses, and the next-day reading drifts above where you'd normally sit. Your pulse doesn't follow the same curve. It stays up the whole time.
| Time after a high dose (more than 30 g) | Systolic | Diastolic | Pulse |
|---|---|---|---|
| 0 to 6 hours | About 3.5 mmHg lower | About 1.9 mmHg lower | Higher |
| 7 to 12 hours | About 3.7 mmHg lower | About 1.7 mmHg lower | Higher |
| 13 hours and later | About 3.7 mmHg higher | About 2.4 mmHg higher | Higher |
These are averages from the Cochrane review. Smaller amounts behaved differently: a single drink made no clear difference to blood pressure in the first hours, and a moderate dose of one to two drinks tended to lower it slightly. The trials included few women, so treat the table as a pattern to look for, not a prediction.
Was it the coffee or the meal? A quick note on each reading tells you. Start my log →
Why the morning-after reading is the one to watch
Say you have three or four drinks with dinner at 8 pm. A reading at 11 pm may look reassuringly low, and a reading at 9 am the next morning, about 13 hours later, lands right where the rebound begins. Morning is also when many people take their daily home reading.
Neither number shows your usual pressure. The evening reading is flattered by the dip; the morning one is nudged up by the rebound, often with a faster pulse too. A short night makes it worse, as our post on poor sleep and blood pressure readings explains. If you're building a weekly average, such as 2 readings a minute apart, morning and evening, for 7 days (28 readings in all), one or two of these days can tilt the whole picture.
You don't need to skip readings on drinking days. Just label them. A short note like "3 glasses of wine last night" next to a reading lets you, or your clinician, see why that morning sat higher. Our guide to morning versus evening readings explains why the time of day already shifts your numbers, and alcohol layers on top of that.
Does drinking regularly raise your blood pressure for good?
It can. The short-term swings above fade within a day or so, but steady heavy drinking pushes your baseline up and keeps it there. Mayo Clinic notes that heavy drinkers who cut back to moderate drinking can lower systolic pressure by about 2 to 4 mmHg and diastolic by about 1 to 2 mmHg.
The bigger the habit, the bigger the change when it shrinks. A 2017 meta-analysis in The Lancet Public Health pooled 36 trials with 2,865 participants. People who drank six or more drinks a day and cut their intake by about half saw systolic pressure fall by about 5.5 mmHg and diastolic by about 4 mmHg. In people drinking two drinks a day or less, cutting back made little measurable difference to blood pressure.
How much counts as "a drink"? The American Heart Association defines one as a 12-ounce beer (5% alcohol), a 5-ounce glass of wine (12%), or 1.5 ounces of 80-proof spirits. It advises people who drink to keep it to no more than two a day for men and one for women, and says that if you don't drink, don't start. A restaurant pour of wine or a craft beer can easily hold more than one of these.
How to get a fair reading around drinking
A few habits keep alcohol from muddying your log:
- Skip readings in the evening after you've had more than a drink or two. The dip makes them look better than they are.
- Treat the next morning's reading as a "drinking day" reading, and add a note saying so.
- For a reading meant to reflect your baseline, measure on a day after an alcohol-free evening.
- Keep the rest of your pre-reading routine the same: five minutes of quiet rest, feet flat, back supported, arm at heart level.
Within a couple of weeks, your log will show whether drinking nights really do lift your next-morning numbers. If your readings on alcohol-free days keep running high, alcohol isn't the whole story. Under the ACC/AHA guideline, high blood pressure starts at 130/80, while ESH and NICE use 140/90 for clinic readings, so ask your clinician which applies to you. If you take blood pressure medication, your prescriber or pharmacist is the right person to ask how alcohol fits with it.
When is a high reading after drinking an emergency?
Don't put a very high reading down to last night's drinks. If a reading is above 180 systolic or 120 diastolic (either number is enough), wait at least 1 minute and measure again. If it is still above 180/120 and you have no symptoms, the AHA calls it severe hypertension: contact your healthcare professional as soon as possible. If you have chest pain, shortness of breath, back pain, numbness, weakness, vision changes or trouble speaking, it is a hypertensive emergency: call emergency services and don't wait to see if it comes down.
Spotting your own pattern with BPlus
BPlus is built for this kind of note-taking. You log each systolic, diastolic and pulse reading by hand, or scan your own monitor's display with the camera, and the time, date and arm are stamped for you. Add a note such as "2 beers last night" to any entry, then check the trend charts and searchable history to compare drinking-day mornings with alcohol-free ones. When you see your clinician, a PDF or CSV report shows the full picture.
BPlus keeps your data on your device, works offline and needs no account. It's a wellness and logging tool, not a medical device: it doesn't measure, diagnose or treat blood pressure, and it's no substitute for professional care.
Mini-FAQ
How long after drinking should I wait to check my blood pressure? For a reading that reflects your usual level, wait until you've had a full alcohol-free day. In the Cochrane review, a high dose lowered pressure for up to 12 hours and raised it from about 13 hours onward, with pulse elevated for 24 hours. Readings inside that window mostly show the alcohol.
Can one glass of wine raise my blood pressure reading? Probably not by much in the short term. In the Cochrane trials, a single drink made no clear difference in the first hours. Regular daily drinking is different, because it can slowly raise your baseline, so the habit matters more than any one glass.
Why is my blood pressure higher the morning after drinking? After the early dip, the body rebounds as it clears the alcohol. From about 13 hours after a high dose, studies saw systolic about 3.7 mmHg and diastolic about 2.4 mmHg above normal, with a faster pulse that can last a full day. Label these readings so they don't skew your average.
Does cutting back on alcohol lower blood pressure? For heavy drinkers, yes. Mayo Clinic reports drops of about 2 to 4 mmHg systolic when heavy drinkers cut back to moderate levels, and a 2017 meta-analysis found about 5.5 mmHg in people drinking six or more drinks a day who halved their intake.
Sources
Medical disclaimer. BPlus is a wellness and informational tool that helps you record, organize and understand your blood pressure readings. It is not a medical device and does not diagnose, treat, cure or prevent any disease. BPlus does not measure blood pressure on its own. Always consult a qualified healthcare professional. Readings are not a substitute for a clinically validated blood pressure monitor.
