Several everyday drinks can measurably lower blood pressure, with hibiscus tea and beetroot juice backed by the strongest clinical evidence. The effects vary by drink, ranging from a few points to around 10 mmHg for systolic pressure, and most require consistent daily consumption over weeks to produce lasting results.
Hibiscus Tea
Hibiscus tea is the most studied blood-pressure-lowering beverage, and the results are impressive. A meta-analysis in Nutrition Reviews found that hibiscus tea reduced systolic blood pressure (the top number) by about 7 mmHg on average compared to control groups, and by roughly 10 mmHg when compared specifically to placebo. To put that in perspective, a 10-point drop in systolic pressure is comparable to what some first-line blood pressure medications achieve.
The effect on diastolic pressure (the bottom number) is smaller and less consistent, roughly 3 mmHg. Dose matters: studies using less than 1 gram of hibiscus per day showed no significant effect on either number. Most positive trials used preparations equivalent to 2 to 3 cups of brewed hibiscus tea daily. You can steep dried hibiscus flowers in hot water for 5 to 10 minutes, or drink it cold as a chilled infusion. It has a tart, cranberry-like flavor that works well with a small amount of honey.
Beetroot Juice
Beetroot juice works through a completely different mechanism than tea. It’s rich in dietary nitrate, which your body converts into nitric oxide, a molecule that relaxes and widens blood vessels. This is the same signaling molecule your blood vessel walls produce naturally to regulate blood flow.
The catch is that a single serving of beetroot juice produces a relatively short-lived effect. Research published in Frontiers in Physiology found that one dose lowered central blood pressure within 30 minutes but the effect didn’t persist over 24 hours. That means beetroot juice needs to be consumed daily, and ideally as part of a broader dietary pattern rather than a one-time fix. Most studies showing sustained benefits used about 250 mL (roughly one cup) of beetroot juice per day over several weeks. The juice has an earthy, slightly sweet taste that many people find more palatable when mixed with apple or carrot juice.
Unsalted Tomato Juice
A year-long study published in Food Science & Nutrition tracked nearly 500 Japanese adults who drank unsalted tomato juice freely throughout the study period. Among the 94 participants who started with elevated or high blood pressure, systolic pressure dropped from an average of 141 to 137 mmHg, and diastolic pressure fell from 83 to 81 mmHg. The same study found reductions in LDL cholesterol.
The “unsalted” part is critical. Regular commercially prepared tomato juice often contains significant added sodium, which can raise blood pressure. If you’re buying tomato juice for this purpose, check the label for low-sodium or no-salt-added versions.
Pomegranate Juice
Pomegranate juice contains compounds that inhibit ACE, an enzyme your body uses to constrict blood vessels. This is the same enzyme targeted by a common class of blood pressure medications. Clinical studies have shown that regular pomegranate juice consumption can meaningfully reduce blood pressure and lower ACE activity in the blood, though the magnitude of the drop tends to be smaller than what’s seen with hibiscus tea.
Pomegranate juice is calorie-dense, so portion size matters. Sticking to about 4 to 8 ounces per day gives you the beneficial compounds without excess sugar.
Low-Fat Milk
The DASH eating plan, one of the most rigorously tested dietary approaches for lowering blood pressure, emphasizes low-fat dairy as a key component. The benefit comes from the combination of calcium, potassium, and magnesium that milk provides. These three minerals all play roles in regulating how your blood vessels contract and relax. Two to three servings of low-fat dairy per day is the DASH recommendation. Full-fat dairy doesn’t carry the same evidence, likely because the saturated fat offsets some of the mineral benefits.
How Quickly Drinks Affect Blood Pressure
If you’re expecting overnight results, the timeline depends on what you’re changing. Research from the American Heart Association found that the DASH diet, which includes many of these beverages alongside whole dietary changes, lowered blood pressure by about 4 mmHg systolic within just one week. The effect plateaued after that first week, meaning most of the benefit appeared quickly.
Sodium reduction, by contrast, works more slowly. Blood pressure continued to drop over four weeks of lower sodium intake with no sign of leveling off, suggesting the full benefit takes longer than a month to materialize. If you’re combining blood-pressure-friendly drinks with reduced salt intake, expect some early improvement but give it at least four to six weeks to see the full picture.
What Counts as High Blood Pressure
The 2025 guidelines from the American Heart Association define normal blood pressure as below 120/80 mmHg. Elevated blood pressure starts at 120 to 129 systolic with diastolic still under 80. Stage 1 hypertension is 130 to 139 systolic or 80 to 89 diastolic, and Stage 2 is 140/90 or higher. The drinks discussed here are most relevant for people in the elevated or Stage 1 range who want to use dietary changes alongside other lifestyle adjustments. Stage 2 hypertension typically requires medication.
Watch Out for Grapefruit Juice
Grapefruit juice is sometimes suggested as heart-healthy, but it poses a serious interaction risk if you take blood pressure medication. The FDA warns that grapefruit juice interferes with how your body processes certain calcium channel blockers, a common class of blood pressure drugs. The juice blocks an enzyme in your gut that normally limits how much medication enters your bloodstream, potentially causing dangerously high drug levels. If you’re on any blood pressure medication, check whether grapefruit is on the avoid list.
Keeping Fruit Juice in Check
Natural sugar in fruit juice can become a problem at higher volumes. A study from the University of Washington found that one 8-ounce serving of 100% fruit juice per day showed no association with increased blood pressure or diabetes risk. But when intake climbed to 24 ounces or more per day, non-citrus fruit juices were linked to higher blood pressure. The practical limit is one cup of fruit juice daily. Beyond that, you’re better off eating whole fruit, which contains fiber that slows sugar absorption, or choosing lower-sugar options like hibiscus tea or beetroot juice.