High blood pressure can be managed with prescription medications, lifestyle changes, and in some cases, natural supplements. Most people with a confirmed diagnosis will need at least one prescription medication, but diet, exercise, and everyday habits can meaningfully lower your numbers on their own or alongside drugs. What you take depends on how high your blood pressure is and what other health conditions you have.
Know Your Numbers First
Blood pressure guidelines vary slightly depending on which medical body you follow. The 2017 American College of Cardiology and American Heart Association guidelines define hypertension as 130/80 mmHg or higher. The 2024 European Society of Cardiology guidelines set the threshold at 140/90 mmHg, with readings between 120-139/70-89 classified as “elevated” and potentially worth treating depending on your overall cardiovascular risk. Either way, any reading consistently above 120/70 deserves attention. Your treatment path, whether lifestyle-only or medication, hinges on where your numbers fall and how much risk you carry from other factors like diabetes, kidney disease, or a history of heart problems.
The Four Main Medication Classes
Doctors typically start with one of four types of blood pressure medication. Each works differently, and the best choice depends on your age, background, and other health conditions.
Thiazide diuretics help your kidneys flush out extra sodium and water, reducing the volume of fluid your blood vessels have to handle. They’re among the most commonly prescribed first-line options.
ACE inhibitors block an enzyme that tightens blood vessels, letting them relax and widen. The most common side effect is a persistent dry cough, which bothers some people enough to switch medications. Less often, they can cause dizziness from blood pressure dropping too low, headaches, or a temporary loss of taste. In rare cases, they cause swelling under the skin, which can be dangerous if it affects the throat.
ARBs (angiotensin receptor blockers) work on the same blood-vessel-tightening system as ACE inhibitors but at a different point. They’re a common alternative for people who develop a cough on ACE inhibitors.
Calcium channel blockers prevent calcium from entering the muscle cells of your heart and blood vessels, which relaxes vessel walls and lowers pressure. Ankle swelling and flushing are the side effects people notice most often.
Many people start on a single drug and do well. Others need two or even three medications from different classes to reach their target. If your blood pressure stays high despite three medications at adequate doses (one of which should be a diuretic), that’s considered resistant hypertension. At that point, the standard approach is to maximize diuretic therapy, often by switching to a stronger type, and add a medication that blocks a hormone called aldosterone, which drives fluid retention. Fluid overload is one of the biggest reasons blood pressure stays stubbornly elevated.
When to Take Your Medication
You may have heard that taking blood pressure medication at night is better than in the morning. A large meta-analysis of 72 randomized trials found that evening dosing did lower nighttime blood pressure more effectively, by about 4 mmHg systolic compared to morning dosing. But much of the evidence favoring nighttime dosing came from a single research group whose results other teams have struggled to replicate. A separate trial of over 21,000 patients found no difference in heart attack, stroke, or vascular death rates between morning and evening dosing.
The practical takeaway: take your medication at whatever time helps you remember it consistently. Unless your doctor specifically wants to lower your nighttime blood pressure, convenience and consistency matter more than the hour on the clock.
Diet Changes That Lower Blood Pressure
The DASH eating plan, developed by the National Heart, Lung, and Blood Institute, is the most studied dietary approach for hypertension. It emphasizes fruits, vegetables, whole grains, and lean protein while keeping sodium low. The standard target is 2,300 mg of sodium per day, but dropping to 1,500 mg lowers blood pressure even further. For context, a single fast-food meal can easily exceed 1,500 mg. The plan also prioritizes foods rich in potassium, calcium, magnesium, and fiber, all of which support healthy blood vessel function.
Alcohol matters too. For blood pressure management, the recommended limit is one drink per day for women and two for men. Regularly exceeding that pushes blood pressure up and can blunt the effect of medications you’re already taking.
Exercise as a Blood Pressure Treatment
Regular aerobic exercise lowers systolic blood pressure (the top number) by 4 to 10 mmHg and diastolic (the bottom number) by 5 to 8 mmHg. That’s comparable to what some medications achieve. The target is 150 minutes of moderate activity per week, things like brisk walking, cycling, or swimming, or 75 minutes of vigorous activity. The reduction tends to show up within a few weeks of consistent effort, but it only lasts as long as you keep it up. If you stop exercising, your blood pressure typically drifts back to where it was.
Supplements and Natural Options
A few natural products have enough clinical evidence to be worth mentioning, though none replace medication for moderate or severe hypertension.
Hibiscus tea has the strongest data. In one trial, drinking two cups per day (each brewed with 1.25 grams of hibiscus) for a month lowered systolic blood pressure by about 7 mmHg and diastolic by nearly 7 mmHg compared to controls. Another study found that hibiscus extract taken twice daily for eight weeks produced blood pressure reductions of roughly 15/10 mmHg, which was statistically similar to results from a standard prescription medication used in the same trial. These are encouraging numbers, but the studies were small and short-term.
Magnesium and garlic supplements are commonly marketed for blood pressure, but the evidence is less consistent. If you’re interested in trying supplements, treat them as additions to, not substitutes for, proven strategies like diet, exercise, and prescribed medication.
Over-the-Counter Drugs That Raise Blood Pressure
Some of the most common medications in your medicine cabinet can quietly push your blood pressure higher, which is especially important to know if you’re already being treated for hypertension.
NSAIDs like ibuprofen (Advil, Motrin) and naproxen (Aleve) cause your body to retain water, which increases the load on your kidneys and raises blood pressure. If you take these regularly for pain or inflammation, your blood pressure medications may seem less effective than they should be.
Decongestants are the other major culprit. Pseudoephedrine and phenylephrine, found in many cold and allergy products, work by narrowing blood vessels to reduce sinus swelling. That same narrowing raises blood pressure throughout your body. If you have hypertension, check the active ingredients on any cold or sinus medication before taking it. Look for versions labeled “HBP” or “for people with high blood pressure,” which substitute other ingredients for the decongestant.