Key Takeaways
- A low reading shortly after drinking can be misleading: alcohol’s effect on blood pressure changes over the following hours.
- In a review of 36 trials, cutting back lowered blood pressure most clearly in people who started out drinking more.
- Keep taking prescribed medicine. If you get withdrawal symptoms when you cut down, seek medical help before changing your drinking.
Does alcohol raise blood pressure? Yes, particularly with heavier or repeated drinking. Reducing alcohol can help bring readings down, but one number on a home monitor cannot tell you how much of your blood pressure is related to drinking.
One confusing detail is that blood pressure can fall for a few hours after alcohol. A reading taken during that period might look reassuring. It says little, though, about the effect of your usual drinking over months or years. This is why an isolated result cannot settle the question of whether alcohol is affecting your numbers.
In this article, the research provides a starting point for that conversation with your clinician. You’ll find the findings on cutting back, followed by guidance for measuring a drink and recording blood pressure at home. There is also advice on readings that need urgent attention. Bring your records to an appointment, and keep taking prescribed medicine unless your prescriber tells you otherwise.
When Does Alcohol Raise Blood Pressure?
The clock matters when you measure blood pressure after drinking. An early reading may look different from one taken the next day. Feeling relaxed after a glass of wine tells you little about the numbers on your monitor.
The Hours After A Drink
A review of 32 trials involving 767 adults examined blood pressure during the first 24 hours after alcohol. At higher doses, blood pressure fell initially and was higher 13 or more hours later. Most participants were healthy men, so the findings have limits.
This two-phase effect helps explain why the timing of a reading can be relevant. It does not mean everyone’s pressure rises at exactly the same hour. Alcohol should never be used to bring down a high reading.
What Regular Drinking Can Change
Heavy drinking on a regular basis can contribute to high blood pressure that persists. Researchers have also looked at smaller amounts. An analysis in Hypertension drew on data from more than 19,000 adults: even at low alcohol intake, the top blood pressure number, called systolic pressure, rose more over time.
The researchers followed people’s drinking and blood pressure over time; they did not assign them different amounts of alcohol. The results therefore show a link, without proving cause and effect. At your appointment, describing how much you pour and how often you drink gives your clinician more to work with than saying you drink “a little” or “a lot.”
Can Cutting Back Lower Your Blood Pressure?
Yes. A review of 36 trials involving 2,865 people found that reducing alcohol lowered blood pressure most clearly among those who started out drinking more. The review did not find a significant reduction in people drinking two or fewer drinks a day. Its definition of a drink was 12 grams of alcohol, smaller than a U.S. standard drink.
This finding does not establish a safe allowance or promise that cutting back will normalize your readings. It describes an average response across trials, most of whose participants were men.
Measure Your Usual Pour
The glass you use at home may hold several servings. In the U.S., one standard drink contains about 14 grams of alcohol. For wine at 12% alcohol, that’s a 5-ounce pour. The equivalent is 12 ounces of 5% beer or 1.5 ounces of 40% spirits.
Pour 10 ounces of that wine and you’ve had two standard drinks, even if you never refill the glass. Measure your usual serving once and check the alcohol percentage on the bottle. Then your record can show the amount you drank, rather than just how many glasses you used.
You can record your drinks with UM to make those amounts easier to review. Take that record to your appointment alongside your blood pressure log; the app does not measure or treat blood pressure.
What To Do With Your Blood Pressure Readings
Write down the readings you take on the schedule agreed with your clinician, including the higher ones. Add when you last drank alcohol. With that record, your clinician can compare results across days instead of working from whichever number you happen to remember.
Make Home Measurements Consistent
Make time for a consistent home-measurement routine using a validated upper-arm monitor with a cuff that fits. For the 30 minutes before a reading, avoid caffeine, smoking and exercise. Sit with your feet flat and your arm supported at heart level, then rest for five minutes before you start.
Take two readings one minute apart at the times agreed with your clinician. Record both. A home log can help guide care, but do not stop blood pressure medicine because a few readings improve.
For a nonpregnant adult, a reading above 180 systolic or above 120 diastolic needs prompt attention. With chest pain, breathlessness, weakness, vision changes or difficulty speaking, call 911. Without symptoms, wait at least one minute and check again; if it remains that high, contact your healthcare professional as soon as possible.
Check Withdrawal Risk Before Cutting Back
Shaking, sweating or nausea when a drink is late or skipped can be signs of withdrawal. Speak with a healthcare professional before cutting down or stopping if this happens to you. For someone physically dependent on alcohol, stopping abruptly can be dangerous.
Seizures, hallucinations or severe confusion after reducing alcohol need emergency medical care. A plan to lower blood pressure should include a safe way to change your drinking, not a test of how much discomfort you can tolerate.
Bring Your Drinking Record To Your Next Appointment
The question “does alcohol raise blood pressure?” is worth bringing into the room with your actual readings. Note the size of your drinks and how often you have them. Ask how alcohol fits into your treatment and when to review your numbers again.
You can use the Unconscious Moderation program to keep a record of your drinking and write about it with guided journal prompts. For example, you might note what was happening when you reached for an evening drink. UM supports that work on your habits; blood pressure treatment and withdrawal care belong with your healthcare team.
Sources
Tasnim and colleagues. Effect of alcohol on blood pressure. Cochrane Database of Systematic Reviews, 2020.
Roerecke and colleagues. The effect of a reduction in alcohol consumption on blood pressure. The Lancet Public Health, 2017.
American Heart Association. Routinely drinking alcohol may raise blood pressure even in adults without hypertension; Limiting or Avoiding Alcohol to Manage High Blood Pressure.
American Heart Association. Home Blood Pressure Monitoring; When To Call 911 About High Blood Pressure.
Mayo Clinic. Alcohol: Does it affect blood pressure?
NHS. Alcohol-use disorder.
FAQs
Is Red Wine Better For Blood Pressure Than Beer?
Red wine is not a treatment for high blood pressure. Beer, wine and spirits all contain alcohol, and serving size and strength affect how much you consume. Switching drinks without reducing the amount of alcohol is not a reliable blood pressure strategy.
How Quickly Will Blood Pressure Fall If I Stop Drinking?
There is no guaranteed deadline or drop. Starting intake, medication and other health factors affect the result. Agree on a follow-up schedule with your clinician rather than using a seven-day or 30-day target to decide whether treatment is working.
Can I Drink Alcohol While Taking Blood Pressure Medicine?
Ask your prescriber or pharmacist about your specific medicine. Alcohol can change how some blood pressure medicines work or increase side effects. Skipping a dose to have a drink is not a safe workaround.