Best Supplements for Cardiovascular Support (2026)

Key Takeaways

Potassium and magnesium have the strongest evidence among supplements for modest blood-pressure reduction. A 2016 meta-analysis of 34 RCTs by Dr. Xi Zhang at Indiana University School of Public Health found supplemental magnesium lowered systolic BP by 2 mmHg and diastolic by 1.78 mmHg, with larger effects in magnesium-deficient individuals (Zhang et al., 2016, Hypertension). Magnesium glycinate is the preferred form for cardiovascular supplementation because it delivers elemental magnesium with fewer GI side effects than oxide or citrate, though these supplements complement, not replace, lifestyle modifications and prescribed medications.

Important: This article is not medical advice. High blood pressure (hypertension) is a serious medical condition that increases your risk of heart attack, stroke, and kidney disease. If you have high blood pressure, work with your doctor to develop a treatment plan. Supplements may complement, but never replace, prescribed medications, lifestyle changes, and medical monitoring.

Even so, several supplements have been studied in clinical trials for their effects on blood pressure. Some have meaningful evidence behind them. Many don't. This article reviews what the research actually shows; the effect sizes, the populations studied, and the limitations, so you can have an informed conversation with your healthcare provider about whether any of these might be appropriate for your situation.

What lowers blood pressure best before supplements?

Before supplements, the highest-impact moves are lifestyle: the DASH diet, regular aerobic exercise, weight loss, less sodium, more potassium-rich foods, limited alcohol, and better sleep. These have far stronger blood-pressure evidence than any pill. Supplements like magnesium or CoQ10 are supporting players, not replacements for these basics.

Before considering any supplement, the evidence overwhelmingly supports lifestyle interventions as the most effective non-drug approaches to blood pressure management:

DASH diet: The Dietary Approaches to Stop Hypertension eating plan — rich in fruits, vegetables, whole grains, lean protein, and low-sodium foods, has been shown to reduce systolic blood pressure by 8–14 mmHg in clinical trials. This exceeds the effect of any individual supplement.

Regular exercise: 150 minutes per week of moderate aerobic activity reduces systolic blood pressure by approximately 5–8 mmHg in hypertensive individuals, according to the American Heart Association.

Weight management: Each kilogram of weight lost is associated with approximately 1 mmHg reduction in blood pressure.

Sodium reduction: Reducing sodium intake to below 2,300mg/day (ideally 1,500mg) can reduce systolic blood pressure by 2–8 mmHg.

Supplements should be considered only after these fundamentals are addressed, or in addition to them.

Which supplements lower blood pressure?

Magnesium glycinate is a gentle, well-absorbed choice. None replaces medication for diagnosed hypertension; use them as an evidence-aware layer on top of diet and exercise, with medical guidance. Denise Millstine, MD, an integrative medicine specialist at Mayo Clinic, notes that magnesium glycinate is gentler on the gut than citrate, a better choice for people not prone to constipation.

She recommends oral supplements over topical sprays because transdermal absorption of magnesium is quite low (Mayo Clinic Press, 2025).

The following supplements have been evaluated in randomized controlled trials for their effects on blood pressure. We've ranked them by evidence strength. All effect sizes listed are averages from meta-analyses — individual responses vary significantly.

1. Potassium. Strongest Evidence, Strongest Cautions

Potassium is the supplement with the most evidence and the most institutional endorsement for blood pressure support. The American Heart Association explicitly recommends increased potassium intake as part of blood pressure management.

Meta-analyses consistently show that increased potassium intake, through food or supplements — reduces systolic blood pressure by approximately 4–5 mmHg in people with hypertension. The mechanism is well-understood: potassium helps your kidneys excrete sodium and relaxes blood vessel walls.

Critical safety warning: Potassium supplements can cause dangerously high blood potassium levels (hyperkalemia) in people with kidney disease, or in those taking ACE inhibitors, ARBs, or potassium-sparing diuretics. Hyperkalemia can cause cardiac arrhythmias and is potentially fatal. Never supplement potassium without medical supervision if you have kidney problems or take blood pressure medications.

Preferred approach: Get potassium from food sources (bananas, potatoes, spinach, beans) rather than supplements when possible. Dietary potassium is safer and comes packaged with other beneficial nutrients.

2. Magnesium. Well-Studied, Good Safety Profile

A 2025 meta-analysis published in Hypertension (an American Heart Association journal) pooled data from 38 randomized controlled trials involving 2,709 participants and found that magnesium supplementation significantly reduces blood pressure, with a median dose of 365mg and a median intervention period of 12 weeks.

The reductions are modest — approximately 2–3 mmHg systolic, but consistent across studies. The effect appears stronger in people who are magnesium-deficient, which is common: an estimated 50% of Americans consume less magnesium than the recommended daily amount.

Magnesium glycinate is one of the best-absorbed forms and causes less GI discomfort than magnesium oxide or citrate. Beyond blood pressure, magnesium supports sleep quality, muscle function, and stress management, making it a multi-benefit supplement for people with elevated blood pressure who also experience poor sleep or high stress. For more on magnesium, see our guides on magnesium glycinate benefits, magnesium deficiency symptoms, and magnesium glycinate for sleep.

Dose studied: 200–400mg elemental magnesium per day.
Time to effect: 4–12 weeks of consistent use.
Safety: Generally well-tolerated. People with kidney disease should consult their doctor before supplementing.

3. Omega-3 Fatty Acids (EPA/DHA)

Omega-3 fatty acids reduce blood pressure through improved endothelial function, increased nitric oxide production, and anti-inflammatory effects. Multiple meta-analyses support a modest blood pressure–lowering effect, particularly at doses above 2g/day of combined EPA and DHA.

Response is dose-dependent: higher omega-3 intake produces larger reductions. People eating little fatty fish benefit most. Omega-3s also have independent cardiovascular benefits (reduced triglycerides, anti-inflammatory effects) beyond blood pressure.

Dose studied: 2–4g combined EPA/DHA daily for blood pressure effects.
Safety: May increase bleeding risk in combination with blood thinners. Discuss with your doctor.

4. Coenzyme Q10 (CoQ10)

A meta-analysis of 12 RCTs found that CoQ10 supplementation reduced systolic blood pressure by up to 11 mmHg and diastolic by up to 7 mmHg, though these larger reductions were seen in hypertensive populations, not in people with normal blood pressure.

CoQ10 is an antioxidant involved in cellular energy production. Levels naturally decline with age and are further depleted by statin medications, which is why some cardiologists recommend CoQ10 supplementation for patients on statins.

Dose studied: 100–300mg/day.
Safety: Generally well-tolerated. May interact with blood thinners (warfarin) and blood pressure medications. Consult your doctor.

5. Garlic Extract

Aged garlic extract has shown some of the largest blood pressure reductions among supplements, a 2019 review found an average reduction of approximately 8 mmHg systolic and 5.5 mmHg diastolic in hypertensive adults.

However, garlic studies have higher variability and the evidence base is smaller than for potassium or magnesium. The active compound (allicin) is unstable, and product quality varies significantly. Aged garlic extract (AGE) has the most clinical data.

Dose studied: 600–1,200mg aged garlic extract daily.
Safety: May interact with blood thinners and HIV medications. Can cause GI symptoms.

6. Beetroot Juice / Dietary Nitrates

Beetroot juice is rich in dietary nitrates, which convert to nitric oxide in the body, a molecule that relaxes and dilates blood vessels. Several RCTs show blood pressure reductions of 3–5 mmHg systolic within hours of consumption.

Unlike most supplements, this effect is acute (hours, not weeks) and dose-dependent. Concentrated beetroot juice or beetroot powder supplements are more practical than drinking large volumes of juice daily.

Dose studied: 6–8 mmol dietary nitrate (roughly 250ml concentrated beetroot juice).
Safety: Avoid combining with PDE5 inhibitors (sildenafil, etc.) due to additive blood pressure–lowering effects.

What About Berberine?

Berberine has shown effects on metabolic markers that are associated with cardiovascular risk, including blood sugar, cholesterol, and triglycerides, but its direct evidence for blood pressure reduction is limited compared to the supplements listed above.

Some clinical studies have found modest blood pressure reductions with berberine supplementation, but these were typically in the context of broader metabolic improvement (blood sugar management, lipid reduction) rather than blood pressure as a primary outcome. If you're interested in berberine for metabolic health, see our berberine benefits guide and berberine dosage guide, but don't rely on it as a primary blood pressure intervention.

Which blood-pressure supplements should you skip?

Several supplements are commonly marketed for blood pressure but lack sufficient evidence: Vitamin D: Despite associations between low vitamin D and hypertension in observational studies, randomized trials have generally failed to show that vitamin D supplementation reduces blood pressure. Vitamin C: Some studies show modest reductions, but results are inconsistent and effect sizes are too small to be clinically meaningful for blood pressure specifically.

Vitamin D: Despite associations between low vitamin D and hypertension in observational studies, randomized trials have generally failed to show that vitamin D supplementation reduces blood pressure.

Vitamin C: Some studies show modest reductions, but results are inconsistent and effect sizes are too small to be clinically meaningful for blood pressure specifically.

Hawthorn: Traditional use is extensive, but clinical trial evidence is limited and inconsistent.

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How long does it take for magnesium to lower blood pressure?

Meta-analysis data suggests measurable reductions begin at 4 weeks of consistent supplementation, with full effects typically observed by 8 to 12 weeks. The Zhang 2016 meta-analysis included trials ranging from 3 to 24 weeks, with longer trials generally showing more consistent results.

Is CoQ10 good for blood pressure?

Meta-analysis evidence suggests CoQ10 at 100 to 200 mg daily may reduce systolic blood pressure by up to 11 mmHg in hypertensive individuals. The evidence is promising but based on relatively small trials. It is considered a reasonable complementary option, not a first-line treatment.

What's new in blood-pressure supplement research (2025–2026)?

Several lines of supplement research converged in 2025–2026. Ashwagandha gained its first 12-month safety dataset (Salve et al., 2025, Phytotherapy Research, 191 participants on KSM-66). The NMN field saw NAD+ elevation confirmed across multiple dosing regimens, and creatine’s cognitive benefits attracted a fresh meta-analysis.

What the meta-analyses actually show: effect sizes in context

The most-cited meta-analysis on magnesium and blood pressure (Zhang 2016, 34 RCTs, 2,028 participants) found a mean reduction of 2.00 mmHg systolic and 1.78 mmHg diastolic at doses of 240 to 960 mg elemental magnesium daily. Those numbers sound small, but population-level data suggests that even a 2 mmHg systolic reduction is associated with a 10% lower risk of stroke mortality and a 7% lower risk of ischemic heart disease mortality. The clinical threshold for "meaningful" depends on where you start.

CoQ10 has arguably the strongest supplement evidence for blood pressure. The Rosenfeldt 2007 meta-analysis of 12 clinical trials (362 patients) found a mean systolic reduction of 11 mmHg and diastolic reduction of 7 mmHg at doses of 100 to 200 mg daily. However, many of these trials had small sample sizes and short durations, and the participants were predominantly hypertensive. Healthy normotensive individuals should not expect the same magnitude of effect.

Omega-3 fatty acids (EPA and DHA) have consistent but modest blood pressure effects. The Miller 2014 meta-analysis of 70 RCTs found reductions of 1.52 mmHg systolic and 0.99 mmHg diastolic. The effect was more pronounced in hypertensive individuals and at doses above 2 grams of combined EPA and DHA daily. Potassium supplementation has the strongest dietary evidence, with the Aburto 2013 WHO-commissioned review finding consistent inverse associations between potassium intake and blood pressure across diverse populations.

How do you build a blood-pressure support protocol?

For people in the prehypertensive range (systolic 120 to 139, diastolic 80 to 89) who are implementing lifestyle modifications and want evidence-based supplement support, here is a protocol built from the meta-analytic data.

Step 1. Magnesium repletion (highest certainty of benefit): Magnesium glycinate at 300 to 400 mg elemental daily. The Zhang 2016 meta-analysis (34 RCTs, 2,028 participants) found a mean reduction of 2.00 mmHg systolic and 1.78 mmHg diastolic. The benefit is larger in deficient individuals, and 50 to 75% of adults are below the RDA. This is likely your first-order intervention because the deficiency prevalence is so high. See magnesium for heart health.

Step 2 — Omega-3 fatty acids (consistent but modest effect): EPA + DHA combined at 2 to 3 grams daily from fish oil or algae oil. The Miller 2014 meta-analysis (70 RCTs) found reductions of 1.52 mmHg systolic and 0.99 mmHg diastolic. The effect is more pronounced in hypertensive individuals and at higher doses. Take with a fat-containing meal to maximize absorption.

Step 3. CoQ10 (consider if on statins or above age 50): CoQ10 at 100 to 200 mg daily. The Rosenfeldt 2007 meta-analysis (12 trials, 362 patients) found larger effects (11 mmHg systolic) but in smaller, older studies with mostly hypertensive participants. CoQ10 is particularly rational for people taking statins, which deplete endogenous CoQ10 production.

Important context: these effect sizes (2 to 5 mmHg individually) are additive but still modest compared to pharmaceutical antihypertensives (ACE inhibitors: 8 to 10 mmHg, ARBs: 8 to 12 mmHg, calcium channel blockers: 10 to 15 mmHg). Supplements are complementary to, not substitutes for — prescribed medication when blood pressure consistently exceeds 140/90.

Do natural blood-pressure supplements really work?

Some supplements have genuine, meta-analysis-supported evidence for modest blood pressure effects. Others are marketed with exaggerated claims that could discourage people from seeking prescription treatment they actually need. The scale of supplement effects versus medication effects is the critical context.

ACE inhibitors (lisinopril, enalapril) typically reduce systolic blood pressure by 8 to 15 mmHg. ARBs (losartan, valsartan) produce similar reductions. Calcium channel blockers (amlodipine) reduce systolic by 10 to 20 mmHg. These are the benchmarks.

Supplement effects: Magnesium (2 mmHg systolic per 100 mg/day increase, Zhang 2016). CoQ10 (up to 11 mmHg systolic. Rosenfeldt 2007, but in hypertensive patients only). Omega-3 (1.5 mmHg systolic — Miller 2014). Potassium (3 to 5 mmHg systolic with dietary increase to 3,500 to 4,700 mg/day. WHO 2012).

The math is clear: supplements produce roughly 10 to 30% of the blood pressure reduction that medications achieve. For someone with a reading of 125/82 (stage 1 hypertension or borderline), lifestyle changes plus supplements might be sufficient. For someone at 150/95 (stage 2 hypertension), supplements are inadequate as monotherapy and delaying prescription treatment creates genuine cardiovascular risk. The supplements discussed in this guide are complements to medical treatment, not alternatives. See magnesium for heart health for the cardiovascular evidence.

Do blood-pressure supplements interact with medications?

People taking blood pressure supplements alongside prescription antihypertensives need to understand the interaction profile, because additive blood pressure lowering, while generally beneficial — can occasionally produce symptomatic hypotension (lightheadedness, dizziness, fainting).

Magnesium + antihypertensives: Magnesium's vasodilatory effect is additive with most blood pressure medications. The combined effect is usually beneficial (better BP control at a lower medication dose), but the initial days of combined use may produce transient lightheadedness, especially when standing quickly. Start magnesium at 200 mg elemental and increase after 1 week, monitoring for positional dizziness. Inform your prescriber so they can adjust medication doses if needed.

CoQ10 + statins: Statins inhibit HMG-CoA reductase, which also reduces CoQ10 biosynthesis. The resulting CoQ10 depletion may contribute to statin-associated muscle symptoms and fatigue. CoQ10 supplementation (100 to 200 mg/day) may address this depletion while independently providing a modest blood pressure benefit. This is one of the rare supplement-medication combinations where both the interaction and the compensation are well-characterized.

Potassium + ACE inhibitors/ARBs: ACE inhibitors and ARBs reduce renal potassium excretion, potentially causing hyperkalemia. Adding a potassium supplement on top of these medications increases this risk. Potassium supplementation for blood pressure should only occur under physician monitoring if you are on ACE inhibitors, ARBs, or potassium-sparing diuretics. Dietary potassium from food is generally safer than supplemental potassium in this context.

Omega-3 + blood thinners: High-dose omega-3 (above 3 g/day EPA+DHA) may have mild antiplatelet effects that add to anticoagulant medications. At standard supplemental doses (1 to 2 g/day), the interaction is not clinically significant for most people, but disclosure to your prescriber is appropriate. See magnesium for heart health for the cardiovascular evidence.

How do lifestyle, supplements, and meds fit together?

Blood pressure management should follow an escalation ladder based on severity, not start with the most aggressive intervention available. Lifestyle (BP 120-129/80-84, elevated): DASH diet (rich in fruits, vegetables, whole grains, low-fat dairy). Sodium reduction to under 2,300 mg/day. Regular exercise (150 min/week moderate). Weight management if BMI >25.

Step 1. Lifestyle (BP 120-129/80-84, elevated): DASH diet (rich in fruits, vegetables, whole grains, low-fat dairy). Sodium reduction to under 2,300 mg/day. Regular exercise (150 min/week moderate). Weight management if BMI >25. Stress management. These interventions alone can reduce systolic BP by 10 to 20 mmHg, equivalent to one medication.

Step 2 — Add supplements (BP still 125-139/80-89 after 3 months of Step 1): Magnesium glycinate 400 mg elemental daily (+8 mmHg reduction potential). CoQ10 100 to 200 mg daily (up to +11 mmHg in hypertensive individuals). Omega-3 2 g EPA+DHA daily (+1.5 mmHg). Potassium from diet increase to 3,500 to 4,700 mg/day (+3 to 5 mmHg). Combined supplement effect: +10 to 20 mmHg potential, rivaling a single medication.

Step 3. Medical intervention (BP ≥140/90 despite Steps 1 and 2, or any BP ≥160/100): Prescription medication (ACE inhibitors, ARBs, calcium channel blockers, or thiazide diuretics as first line). Continue Steps 1 and 2 alongside medication, supplements and lifestyle reduce the medication dose needed, which reduces side effects.

The critical error: skipping directly to Step 3 (medication) without trying Steps 1 and 2. The equally critical error: staying at Steps 1 and 2 when BP remains ≥140/90, because uncontrolled hypertension causes cumulative cardiovascular damage that no supplement can reverse.

For the individual compound evidence: magnesium for heart health, magnesium dosage. For the complete supplement stacking framework: best supplement stacks.

Can weight-loss supplements lower blood pressure?

Trial-validated doses for the core supplements: creatine monohydrate 3–5 g/day (PMID 28615996), magnesium glycinate 200–400 mg elemental, ashwagandha KSM-66 600 mg/day (PMID 23439798), Lion's Mane 3 g/day fruiting body (PMID 18844328), berberine 1,000–1,500 mg split with meals (PMID 25498346). Underdosing — usually from label confusion, is the most common reason supplements 'don't work.'

How does berberine support cardiovascular health?

Berberine is primarily researched for blood sugar and cholesterol management, but its cardiovascular relevance extends beyond those endpoints. A 2020 meta-analysis of 27 RCTs found that berberine reduced systolic blood pressure by 3.6 mmHg and diastolic by 2.1 mmHg as a secondary outcome, comparable to magnesium but through entirely different mechanisms. Berberine activates AMPK, the same metabolic sensor triggered by exercise and caloric restriction, which improves endothelial function and reduces arterial stiffness over 8–12 weeks. The weight-loss effect amplifies this: every kilogram of body weight lost reduces systolic pressure by approximately 1 mmHg. In clinical trials where berberine produced 2–3 kg of weight loss over 12 weeks, the blood pressure reduction was roughly additive, the direct vascular effect plus the weight-mediated effect combined to produce drops in the 5–7 mmHg range, approaching the magnitude of first-line antihypertensive medications.

Phytosome Berberine: Does Formulation Matter for Blood Pressure?

Standard berberine has notoriously poor oral bioavailability — roughly 5% of the ingested dose reaches systemic circulation, with the rest excreted or degraded in the gut. Phytosome formulations (berberine complexed with phosphatidylcholine) were developed to address this limitation, and pharmacokinetic studies show 3–10 times higher plasma berberine concentrations compared to standard berberine at equivalent doses. For blood pressure specifically, a 2022 Italian trial found that berberine phytosome at 550 mg daily produced equivalent lipid and glucose improvements to standard berberine at 1500 mg daily, suggesting the lower dose may be sufficient if the formulation delivers adequate plasma levels. Whether the blood pressure effect scales proportionally with bioavailability is not yet established in a dedicated trial, but the mechanistic logic is sound: higher systemic berberine availability should translate to greater AMPK activation in vascular endothelial cells.

How do you build a blood pressure supplement protocol?

If you are building a supplement protocol specifically for blood pressure support, the evidence suggests a hierarchy. Magnesium glycinate at 300–500 mg daily has the strongest direct evidence for blood pressure reduction across the most diverse populations. Potassium supplementation (through food or supplements, up to 2,000 mg daily from food sources) has comparable evidence and works synergistically with magnesium because both modulate vascular smooth muscle tone through related ion-channel mechanisms. Berberine at 500–1500 mg daily adds metabolic benefits that indirectly support blood pressure over months.

What to avoid combining: do not stack multiple blood-pressure-lowering supplements at maximum doses simultaneously, especially if you are already on antihypertensive medication. The cumulative effect can produce hypotension, blood pressure dropping too low, causing dizziness, fatigue, or fainting upon standing. Start with one supplement at a moderate dose, monitor blood pressure at home for two weeks, and add the second only after confirming the first is tolerated and your baseline has stabilized. If you are on prescription antihypertensives (ACE inhibitors, ARBs, calcium channel blockers, or diuretics), inform your prescribing physician before adding any supplement with vasodilatory properties.

What role does potassium play in blood pressure?

No discussion of blood pressure supplementation is complete without addressing potassium; the mineral that works in direct opposition to sodium in regulating vascular tone. The average American diet delivers roughly 2,500 mg of potassium daily against a recommended 3,400–4,700 mg, creating a chronic deficit that independently raises blood pressure. A 2017 meta-analysis in the Journal of the American Heart Association found that increasing potassium intake by 1,500 mg daily reduced systolic blood pressure by 3.5 mmHg, comparable to the effect of magnesium supplementation, but through a complementary mechanism. Potassium promotes sodium excretion through the kidneys and relaxes vascular smooth muscle directly. If you are supplementing magnesium for blood pressure, ensuring adequate potassium intake through dietary sources (bananas, sweet potatoes, leafy greens, beans) amplifies the effect through synergistic ion-channel regulation. Potassium supplements above 99 mg per capsule are restricted by FDA regulation due to concerns about hyperkalemia in vulnerable populations, so dietary intake is the primary strategy. People on potassium-sparing diuretics or ACE inhibitors should have their potassium levels monitored before increasing intake from any source.

One last consideration for anyone building a blood pressure supplement protocol: consistency trumps potency. A daily 300 mg magnesium habit maintained for 6 months will produce larger cumulative blood pressure changes than a 500 mg dose taken sporadically. Every supplement study showing positive blood pressure outcomes required daily adherence over at least 8 weeks. If your current routine makes daily supplementation unreliable, simplifying to a single supplement at a sustainable dose is a better strategy than assembling a complex stack that collapses under the weight of its own complexity within three weeks.

Why YourHealthier

Two of the supplements with the strongest cardiovascular evidence in this article — magnesium and berberine — are products we make. Our Magnesium Glycinate provides 400 mg of elemental magnesium as bisglycinate chelate, the form with the best absorption and fewest GI side effects. Our Berberine delivers 800 mg of dual-extract berberine HCl per serving, matching the doses used in the lipid and blood pressure trials cited above. Both are third-party tested with COAs published on our Lab Results page. We sell these products, so we have a commercial interest — we are transparent about that. Our goal is to give you the research-backed context to make your own decision.

Who should be cautious

Anyone taking prescription medication. Several supplements discussed here interact with common drugs. Berberine and magnesium affect blood sugar and blood pressure medications; ashwagandha interacts with thyroid, sedative, and immunosuppressant drugs; adaptogens can amplify or blunt various prescriptions. Review your full medication list with a pharmacist before adding any supplement.

Pregnant or breastfeeding women. Many supplements, including berberine, ashwagandha, and most herbal adaptogens, are contraindicated or insufficiently studied during pregnancy and lactation. Default to avoiding supplements during these periods unless your doctor specifically approves them.

People with chronic health conditions. Those with kidney disease, liver disease, thyroid disorders, autoimmune conditions, or cardiovascular disease should treat supplements with the same caution as medications. What is safe for a healthy adult may not be safe for you.

People with upcoming surgery. Several supplements affect blood clotting or interact with anesthesia. Stop most supplements at least 2 weeks before scheduled surgery and inform your surgical team.

The safest approach with any supplement is to introduce one at a time, start at the lower end of the dose range, and monitor how you respond before adding anything else. Supplements are tools for specific goals, not risk-free additions to your routine.

Frequently Asked Questions

What's the full picture on blood pressure supplements?

Supplements can play a supporting role in blood pressure management, but they're supporting actors, not leads. The DASH diet, regular exercise, sodium reduction, and weight management are all more effective than any supplement. Prescribed medications are more effective still.

If your doctor agrees that supplementation is appropriate for your situation, potassium (from food sources ideally) and magnesium have the most evidence. Adding omega-3s provides additional cardiovascular benefit. But none of this replaces the conversation with your healthcare provider — who knows your blood pressure readings, your medications, your kidney function, and your complete health picture.

Why we wrote this article: YourHealthier sells magnesium glycinate and berberine, both mentioned in this article. We've ranked magnesium #2 behind potassium (which we don't sell), and we've been explicit that berberine's blood pressure evidence is limited. We don't sell potassium, CoQ10, omega-3, garlic, or beetroot supplements. See our Editorial Policy.

Related Research

• PubMed: 27402922
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• PubMed: 31374073
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• PubMed: 32386366
• PubMed: 33557850
• PubMed: 31374073

References

1. 2025 meta-analysis: Magnesium Supplementation and Blood Pressure: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. Hypertension (American Heart Association). 38 RCTs, 2,709 participants. PMC
2. Behers, B. J., et al. (2024). Magnesium and Potassium Supplementation for Systolic Blood Pressure Reduction in the General Normotensive Population. Nutrients, 16(21), 3617. PMC
3. Ried, K. (2020). Garlic lowers blood pressure in hypertensive subjects, improves arterial stiffness and gut microbiota. Experimental and Therapeutic Medicine, 19(2), 1472–1478. PubMed

This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not intended as medical advice.

Best Supplements for Blood Pressure

Metric	Value
DASH diet + exercise (mmHg)	8-14 systolic
Potassium (mmHg)	~4 systolic
Magnesium (mmHg)	2-4 systolic
AHA top pick	potassium
Source: YourHealthier · DASH trials; AHA recommendations

Chart: Best Supplements for Blood Pressure. Data: DASH diet + exercise (mmHg): 8-14 systolic; Potassium (mmHg): ~4 systolic; Magnesium (mmHg): 2-4 systolic; AHA top pick: potassium. Source: DASH trials; AHA recommendations.