Several proven options can bring your blood pressure down, ranging from dietary changes and exercise to prescription medications. What works best depends on how high your numbers are and what’s causing them. Most people with sustained high blood pressure use a combination of lifestyle changes and, if needed, one or more medications to reach a healthy range.
Lifestyle Changes That Lower Blood Pressure
Before (or alongside) medication, a handful of lifestyle shifts can produce meaningful drops in blood pressure. These aren’t vague wellness tips. Each one has specific, measurable effects.
The DASH diet is the most studied dietary approach for blood pressure. It emphasizes fruits, vegetables, whole grains, lean protein, and low-fat dairy while limiting saturated fat and added sugar. Clinical trials show average reductions of 1 to 13 mmHg systolic and 1 to 10 mmHg diastolic, with bigger drops for people starting at higher levels. You don’t need to follow it perfectly to see results; even partial adoption helps.
Cutting sodium is one of the fastest dietary changes you can make. The American Heart Association recommends no more than 2,300 mg of sodium per day, with an ideal limit of 1,500 mg for most adults, especially those with high blood pressure. Most sodium comes from packaged and restaurant food, not the salt shaker. Reading labels and cooking more meals at home makes a significant difference within weeks.
Exercise rivals some medications in its effect on blood pressure. A 12-week trial of men with hypertension found that aerobic exercise (like brisk walking, cycling, or swimming) reduced systolic pressure by about 9 mmHg. Resistance training (weights) lowered it by about 7 mmHg. Combining both was the most effective approach, producing a systolic drop of roughly 12.5 mmHg and a diastolic drop of nearly 10 mmHg. Aim for at least 150 minutes of moderate activity per week, spread across most days.
Supplements With Evidence Behind Them
A few supplements have enough clinical data to be worth considering, though none are powerful enough to replace medication for moderate or severe hypertension.
Hibiscus tea has some of the strongest evidence among herbal options. Drinking two cups daily (using about 1.25 g of dried hibiscus per cup) for one month lowered systolic blood pressure by about 7 mmHg and diastolic by about 7 mmHg in a controlled trial of people with stage 1 hypertension. That’s a modest but real reduction, comparable to what some medications achieve at low doses.
Omega-3 fatty acids (fish oil) show consistent, small effects. In a double-blind trial, 4 grams daily for 8 weeks reduced 24-hour blood pressure by about 3/3 mmHg and lowered resting heart rate by 4 beats per minute. These are modest numbers, but they add up when combined with other changes.
CoQ10 is widely marketed for blood pressure, but the evidence is weaker than many people assume. In the same controlled trial that tested omega-3s, CoQ10 at 200 mg daily had no independent effect on blood pressure.
Potassium plays a key role in blood pressure regulation, and most people don’t get enough. Increasing potassium through food (bananas, potatoes, beans, spinach) is generally safe and helpful. However, potassium supplements can be dangerous if you have kidney disease, are over 65, or take certain blood pressure medications that already raise potassium levels. If any of those apply to you, talk to your doctor before supplementing.
Prescription Medications
When lifestyle changes alone aren’t enough, or when your blood pressure is significantly elevated, medication becomes the standard approach. Three main classes are used as first-line treatment:
- Thiazide-type diuretics help your kidneys flush out excess sodium and water, reducing the volume of fluid your blood vessels have to handle.
- Calcium channel blockers relax the walls of your blood vessels, making it easier for blood to flow through.
- ACE inhibitors and ARBs block a hormone system that tightens blood vessels. They’re especially common in people with diabetes or kidney disease because they offer additional protective benefits for those organs.
Beta-blockers, which slow your heart rate, are no longer recommended as a first choice for blood pressure alone. They’re typically reserved for people who also have heart failure or a history of heart attack. Other medications, like potassium-sparing diuretics, are sometimes added when the first-line options aren’t enough on their own.
How Quickly Medications Work
Blood pressure medications start working faster than most people expect. Research modeling drug response across multiple trials found that most medications reach about half their maximum blood pressure-lowering effect within the first week. If your doctor adjusts your dose gradually (which is common), the timeline stretches slightly, with half the effect appearing by about 1.2 weeks.
This means you and your doctor can get a reasonable sense of whether a medication is working within the first couple of weeks. If your numbers haven’t budged meaningfully after two to four weeks, a dose change or a different medication is usually the next step. Many people try one or two adjustments before landing on the right combination.
Common Medications That Raise Blood Pressure
Sometimes blood pressure stays stubbornly high because something you’re taking is pushing it up. A few common over-the-counter products are known culprits.
Decongestants are the biggest offenders. Pseudoephedrine, phenylephrine, and similar ingredients found in cold and sinus medications constrict blood vessels, which directly raises blood pressure. If you have hypertension, look for cold remedies labeled “decongestant-free.”
NSAIDs like ibuprofen (Advil, Motrin) and naproxen (Aleve) can raise blood pressure and reduce the effectiveness of blood pressure medications. Occasional use for a headache is unlikely to cause problems, but regular use for chronic pain is worth discussing with your doctor. Acetaminophen (Tylenol) is generally considered a safer alternative for pain relief when blood pressure is a concern.
Also check medication labels for sodium content. Some effervescent or dissolvable tablets contain surprisingly high amounts of sodium that can add up.
When High Blood Pressure Is an Emergency
A blood pressure reading of 180/120 mmHg or higher is a hypertensive crisis and requires immediate medical attention. If you see numbers in that range and experience any of the following, call 911: chest pain, shortness of breath, blurred vision, confusion, severe anxiety, or stroke symptoms like sudden numbness or tingling on one side of the body. This is not a situation for lifestyle changes or supplements. It requires emergency treatment to prevent organ damage.