What you can take for high blood pressure depends on how high it is and what’s driving it up. For many people, lifestyle changes alone can bring readings down by 5 to 10 points. Others need one or more prescription medications, and most people with hypertension eventually use a combination of both approaches. The right path starts with knowing your numbers: normal blood pressure is below 120/80, stage 1 hypertension starts at 130/80, and stage 2 begins at 140/90.
Lifestyle Changes That Lower Blood Pressure
If your blood pressure is in the elevated range (120–129 systolic) or early stage 1, lifestyle adjustments are typically the first line of defense. Even if you’re already on medication, these changes make your drugs work better and can sometimes allow you to reduce your dose over time.
Regular aerobic exercise is one of the most effective non-drug interventions. Getting at least 150 minutes of moderate activity per week (brisk walking, cycling, swimming) can lower systolic pressure by 4 to 10 points and diastolic by 5 to 8 points. That’s roughly the same effect as a single blood pressure medication. The key is consistency: those benefits fade within a few weeks if you stop.
The DASH eating plan, developed specifically for blood pressure management, emphasizes fruits, vegetables, whole grains, lean protein, and low-fat dairy while limiting saturated fat and added sugar. The biggest lever in this diet is sodium. Keeping sodium under 2,300 milligrams per day helps, but cutting to 1,500 milligrams daily lowers blood pressure even further. For context, a single fast-food meal can easily exceed 2,000 milligrams.
Other changes with measurable effects include losing excess weight (even 5 to 10 pounds matters), limiting alcohol to one drink per day for women and two for men, and managing chronic stress. None of these work overnight, but together they can reduce your need for medication or prevent you from needing it at all.
The Four Main Types of Blood Pressure Medication
When lifestyle changes aren’t enough, or when blood pressure is already at stage 2, prescription medication becomes necessary. Four classes of drugs form the backbone of treatment.
ACE inhibitors block your body from producing a chemical called angiotensin II, which constricts blood vessels. With less of it circulating, your vessels relax and pressure drops. The most notable side effect is a persistent dry cough, which bothers enough people that it’s a common reason for switching medications. Dizziness, fatigue, and headaches also occur.
ARBs work on the same system but from a different angle. Instead of blocking production of angiotensin II, they prevent it from binding to the receptors on your blood vessels. The result is similar, but ARBs are less likely to cause that dry cough. Side effects can include headache, dizziness, and occasional digestive issues like heartburn or diarrhea.
Calcium channel blockers prevent calcium from entering the muscle cells in your blood vessel walls. Without that calcium signal, the muscles relax and your vessels widen. Common side effects include ankle swelling, flushing (feeling warm), drowsiness, and headache.
Diuretics work by helping your kidneys flush extra fluid and salt from your body, which reduces the volume of blood your heart has to pump. They also help blood vessels widen. You’ll urinate more frequently, especially in the first few weeks. Dizziness and headache are common early on.
Why Many People Take More Than One Drug
If you’ve been prescribed two blood pressure medications, that’s not a sign things are going badly. It’s actually the preferred approach in many cases. A large review of 14 clinical trials found that combining two drugs into a single pill improved blood pressure control by 27% compared to taking just one drug, without increasing side effects. The logic is straightforward: two medications at lower doses target different mechanisms simultaneously, which tends to be more effective and gentler than pushing one drug to a high dose.
The most common pairings combine an ACE inhibitor or ARB with either a calcium channel blocker or a diuretic. These are often available as a single pill, which makes the regimen simpler. The American College of Cardiology and American Heart Association both recommend combination pills when available, particularly for people with markedly elevated readings.
Supplements: What the Evidence Shows
Magnesium is the supplement with the most research behind it for blood pressure, but the results come with important caveats. In people with untreated high blood pressure, magnesium supplements only showed consistent reductions at doses above 600 milligrams per day. At lower doses, the results were mixed. For people whose blood pressure is already well controlled with medication, magnesium supplements didn’t produce additional drops, even at high doses. And for people with normal blood pressure, supplementation made no difference at all.
Potassium plays a role in blood pressure regulation, but getting it through food (bananas, potatoes, spinach, beans) is generally more practical and safer than high-dose supplements, which can cause dangerous heart rhythm problems in some people. If you’re on certain blood pressure medications, especially ACE inhibitors or ARBs, your potassium levels need monitoring since these drugs already raise potassium.
Over-the-Counter Products That Raise Blood Pressure
What you stop taking can matter as much as what you start. Several common over-the-counter products can push blood pressure higher, sometimes significantly.
- Pain relievers like ibuprofen (Advil) and naproxen (Aleve) cause your body to retain water and can strain your kidneys, both of which raise blood pressure. If you need regular pain relief and have hypertension, acetaminophen (Tylenol) is generally a safer choice, though it’s worth discussing with your provider.
- Decongestants containing pseudoephedrine or phenylephrine narrow blood vessels throughout your body, not just in your nose. That’s a direct path to higher readings. Many cold and allergy products contain these ingredients, so check labels carefully. Saline nasal sprays and antihistamines are alternatives that won’t affect your blood pressure.
How Quickly Medications Work
Most blood pressure medications reach their peak effect about two to three hours after you take them and work for roughly 24 hours. But that’s the daily cycle. The full clinical benefit, meaning a stable, sustained reduction in your blood pressure, usually takes several weeks to develop. Your provider will typically check your readings after about four to six weeks on a new medication or dose to decide whether adjustments are needed. Don’t judge a new drug by how you feel the first few days.
When High Blood Pressure Becomes an Emergency
A blood pressure reading of 180/120 or higher is a hypertensive crisis. If that number comes with chest pain, shortness of breath, severe headache, blurred vision, confusion, or nausea, it’s a medical emergency. Call 911. Organ damage can happen rapidly at those levels, affecting the heart, brain, kidneys, and eyes. If your reading hits 180/120 but you have no symptoms, wait five minutes, sit quietly, and recheck. If it’s still that high, contact your healthcare provider immediately.