Blood Pressure Support Supplements: What the Evidence Actually Shows

You have a blood pressure number now. Maybe your clinician wrote it on a slip, maybe you bought a home monitor, maybe you just started paying attention. Either way, you have probably noticed the advice online splits into two camps. One camp says eat more leafy greens and walk more. The other says ask your doctor. Neither one tells you how much magnesium was actually studied, how long the trial ran, or how big the change really was.

That is the gap this guide fills. Below, we grade the most-researched nutrients marketed as supplements for blood pressure by the human trial evidence behind them. For each you get the dose researchers used, the duration, the effect size, and a plain statement of where the evidence is thin. Nothing here is a treatment, and nothing replaces the plan your clinician has for you. What it does is let you walk into that conversation holding real numbers.

Table of Contents

• The Number That Matters, and What Support Actually Means
• The Nutrients With the Best Evidence
• Magnesium
• Potassium
• Omega-3 (EPA and DHA)
• Dietary Nitrate and Beetroot
• CoQ10
• Aged Garlic Extract
• Hibiscus
• The Nutrients Where the Evidence Is Weak or Absent
• What Can Work Against You
• How Long It Takes to See Anything
• How to Choose a Product
• What We Recommend
• Frequently Asked Questions
• References

The Number That Matters, and What Support Actually Means

Start with your baseline. A single reading tells you almost nothing. Blood pressure moves through the day, and one high number after a stressful morning is not the same as a pattern. What you want is a handful of readings taken the same way, at the same time, over two weeks.

Your clinician sets the target range with you, because the right range depends on your history. For context, one trial below defined uncontrolled readings as a systolic value of 140 mm Hg or higher, and found its results only held in that group [15]. The trend is what matters.

Here is the honest part most supplement pages skip.

The effect sizes in this category are small, and they shrink dramatically in people whose readings are already normal. That is not a flaw in the nutrients. It is how physiology works. When your system is already balanced, there is less room to move.

A 2023 systematic review and meta-analysis looked at six different nutrients in people with normal readings, and the differences were modest [18]:

• Calcium: about -1.37 systolic and -1.63 diastolic mm Hg
• Magnesium: about -2.79 systolic and -1.56 diastolic mm Hg
• Vitamin E: about -1.76 systolic only
• Potassium: about -2.10 systolic only
• Vitamin C and vitamin D: no significant effect at all in this population

Now compare that to the same nutrients studied in people with elevated readings. Vitamin C trials in that group reported roughly -4.09 systolic and -2.30 diastolic mm Hg [18]. The nutrient did not change. The population did.

The single most useful sentence in this article: supplements for blood pressure show their largest effects in people whose readings are already elevated, and their smallest effects in people whose readings are already fine. If your numbers are good, a supplement is unlikely to move them much.

One more thing before the evidence: several trials here describe their results as statistically significant while the absolute change is only a few points. Read those two things separately. A three-point shift can matter across a population and still be invisible to you as an individual. The researchers who pooled the magnesium trials called their own result a "small but clinically significant reduction" [2].

The Nutrients With the Best Evidence

Seven nutrients have enough human trial data to discuss honestly. For each, you get the population studied, the dose, the duration, and the effect size. Where the evidence is thin, we say so.

For the wider landscape, our heart and circulation resource page covers how these nutrients fit together, and the heart-healthy supplements guide covers the rest of the cardiovascular picture.

Magnesium

Magnesium is the most-studied mineral here, and the one with the most consistent (if modest) results.

A 2016 meta-analysis of randomized, double-blind, placebo-controlled trials found that a median dose of 368 mg per day, taken for a median of three months, was associated with a reduction of 2.00 mm Hg systolic and 1.78 mm Hg diastolic [1]. The authors noted that some unexplained variation between the studies may still exist.

Other analyses put the numbers slightly differently:

• Above 370 mg per day was linked to a 3 to 4 mm Hg systolic and 2 to 3 mm Hg diastolic difference, described by the authors as small but clinically significant [2].
• Each additional 10 mmol per day of intake was linked to a 4.3 mm Hg systolic difference, with the authors cautioning that properly powered trials still need to be done [3].
• A 2026 review of 78 randomized trials found most studies used at least 300 mg daily, and about two-thirds ran 12 weeks or longer. It reported the effects were generally modest and their clinical relevance remains uncertain [4].

Two caveats you should know before you buy anything.

First, the dose ceiling. The tolerable upper intake level for magnesium from supplements is 350 mg per day. That limit applies to supplemental magnesium, not to magnesium from food. And if you have kidney disease, magnesium supplementation needs a clinician's sign-off, because impaired kidneys clear magnesium less efficiently [21].

Second, the form matters. Magnesium glycinate is generally the gentlest on digestion, magnesium citrate is well absorbed and has a mild laxative effect, and magnesium oxide is inexpensive but poorly absorbed. If you already know you want the glycinate form, Integrative Therapeutics Magnesium Glycinate Plus delivers 220 mg of magnesium per two tablets as a fully reacted amino acid chelate. If you are choosing a form for the first time, our breakdown of the different types of magnesium supplements walks through which is which.

Magnesium in one line: roughly 300 to 400 mg daily for at least 12 weeks is the studied range, and the honest expected change is a few points, not a transformation.

Potassium

Potassium works on the other side of the sodium equation, and the evidence for it is decent.

A 1997 meta-analysis of 33 randomized controlled trials found that oral potassium produced reductions of 3.11 mm Hg systolic and 1.97 mm Hg diastolic, and that the effect was amplified by high concurrent sodium consumption [8]. In other words, potassium helped most in people who were also eating a lot of salt.

That pairing is not a coincidence. A large population study found systolic pressure rose by 2.58 mm Hg for every additional gram of sodium excreted per day once sodium intake passed 5 grams per day [19]. The ratio between the two minerals does a lot of the work.

Our honest recommendation here is food-first. Potassium is abundant in leafy greens, beans, potatoes, squash, avocado, and bananas. Food sources come with fiber and other minerals, and they do not carry the same risk profile as a high-dose supplement.

That risk profile is real. Potassium supplements can be dangerous if your kidneys are not filtering well, and potassium interacts with several categories of blood pressure medication [21]. Do not add one on your own initiative.

Omega-3 (EPA and DHA)

Omega-3 is popular for heart health generally. Its effect on blood pressure specifically is real but small. If you are shopping for one, Protocols For Health Omega 3X 1300 puts 300 mg of EPA and 130 mg of DHA in a single softgel.

A meta-analysis of 70 randomized controlled trials found that EPA and DHA together reduced systolic pressure by 1.52 mm Hg, with a confidence interval of -2.25 to -0.79 [5]. That is a narrow, consistent, genuinely modest effect.

Push the dose up and the effect grows a little. A metaregression of 36 trials using a median dose of 3.7 grams per day found reductions of 2.1 mm Hg systolic and 1.6 mm Hg diastolic [6].

Population matters again. An earlier meta-analysis of 17 controlled trials, focused on people with elevated and untreated readings, found much larger differences: -5.5 mm Hg systolic and -3.5 mm Hg diastolic [7].

The shape is consistent across all three analyses: a small benefit at typical doses, a slightly larger one at higher doses, and a much larger one in people whose readings are already elevated.

For dose and form guidance, including why the EPA to DHA ratio matters, see our omega-3 benefits guide.

Dietary Nitrate and Beetroot

This category has the most interesting mechanism and the shortest track record.

Dietary nitrate from beetroot is converted by your body into nitrite and then into nitric oxide, which relaxes blood vessel walls. A chew is a more portable way to take it than a daily glass of juice, and HumanN SuperBeets Heart Chews pairs beet root powder with 150 mg of grape seed extract per two chews.

The best sustained trial is a randomized, phase 2, double-blind, placebo-controlled study in people with elevated readings. Participants drank 250 mL of beetroot juice daily for four weeks. Their clinic blood pressure was 7.7 mm Hg systolic and 2.4 mm Hg diastolic lower than the control group [9].

There is also a well-known acute study. After a single 500 mL serving of beetroot juice, blood pressure dropped by a maximum of 10.4 mm Hg systolic and 8 mm Hg diastolic [10].

Read those two studies differently. The second measures a short-term response to one large drink. It tells us the pathway works, not what happens if you keep doing it for a year. The four-week study looks like real life, and its effect is meaningful but still modest.

If nitric oxide is the part you find interesting, our nitric oxide support guide goes deeper on the pathway and what feeds it.

CoQ10

This is where the evidence gets genuinely messy, and we are not going to pretend otherwise: three trials, three populations, three answers.

• In adults with type 2 diabetes: 200 mg per day for three months was associated with a 6.1 mm Hg systolic and 2.9 mm Hg diastolic reduction. Interestingly, the same trial found the change was not associated with reduced oxidative stress, so the mechanism may not be what everyone assumes [11].
• In adults with chronic kidney disease: 200 mg per day for eight weeks had no independent effect on blood pressure at all [12].
• In adults with high cholesterol who had experienced a myocardial infarction: 200 mg per day for 12 weeks produced statistically significant differences in both systolic and diastolic pressure between groups [13].

Same nutrient. Same 200 mg dose. Opposite results.

Why we are telling you this. A page that cited only the diabetes trial would look more impressive and be less honest. The kidney disease trial was properly designed and found nothing. The likeliest explanation is that CoQ10 helps in some metabolic contexts and not others, and nobody has mapped which is which yet.

For forms (ubiquinol versus ubiquinone) and absorption, our CoQ10 benefits guide covers it.

Aged Garlic Extract

Garlic has the largest headline effect sizes here and the weakest overall evidence base. Both things are true.

Start with the strongest result. A double-blind, randomized, placebo-controlled dose-response trial followed 79 patients with uncontrolled systolic readings, all already taking blood pressure medication, for 12 weeks, testing 240 mg, 480 mg, and 960 mg of aged garlic extract daily (providing 0.6, 1.2, and 2.4 mg of S-allylcysteine respectively). Mean systolic pressure in the 480 mg group was reduced by 11.8 mm Hg compared with placebo over the 12 weeks [14].

A second trial in 50 patients with treated but uncontrolled readings used 960 mg daily, containing 2.4 mg of S-allylcysteine, for 12 weeks. Systolic pressure was on average 10.2 mm Hg lower in the garlic group than in controls [15].

That second trial contains the detail everyone else leaves out. The benefit showed up in the patients whose systolic reading was 140 mm Hg or higher at baseline. In patients already below 140 mm Hg, the difference between garlic and placebo was not significant [15]. The same pattern as every other nutrient here.

Now the caution. A systematic review and meta-analysis of garlic trials identified only eight studies, all using the same dried garlic powder preparation (Kwai), covering 415 subjects. Only three of those trials were specifically conducted in people with elevated readings, and many had other methodological shortcomings [16].

Why "aged" and why S-allylcysteine? Aged garlic extract is garlic aged for many months. That process converts the harsh, pungent compounds into milder, more stable ones, including S-allylcysteine, which is the compound the trials above actually measured. Raw garlic powder and garlic oil have a different compound profile, so a trial of aged garlic extract does not automatically transfer to a garlic powder capsule.

Hibiscus

Hibiscus tea is a pleasant, low-risk option with a modest and partly disappointing evidence base.

A randomized controlled trial in mildly elevated adults had participants drink three 240 mL servings per day for six weeks. The hibiscus group's systolic pressure fell by 7.2 mm Hg on average, against 1.3 mm Hg in the control group, a statistically significant difference [17].

But here is the part to hold onto: the diastolic change was not statistically significant [17]. So the trial produced a real systolic result and an unclear diastolic one. That is thinner than the headline number suggests.

The Nutrients Where the Evidence Is Weak or Absent

Several popular nutrients did not hold up when researchers looked at them in people with normal readings, and the one that did, calcium, moved the number by barely more than a point. That is worth stating plainly, because the marketing has not caught up.

Nutrient	Result in people with normal readings
Vitamin C	No significant effect [18]
Vitamin D	No significant effect [18]
Vitamin E	Only about -1.76 mm Hg systolic, no diastolic effect [18]
Calcium	About -1.37 systolic and -1.63 diastolic mm Hg [18]
Olive leaf	Not supported by the pooled human trial data we reviewed
L-arginine	Not supported by the pooled human trial data we reviewed

Note what that table does not say. It does not say these nutrients are useless. Vitamin D and calcium do important work elsewhere in the body, and a deficiency in either is worth correcting. It says they are not reliable levers for blood pressure support specifically, and buying them for that effect is likely to disappoint.

Olive leaf extract and L-arginine appear in a lot of competitor lists. Neither was in the six-supplement pooled analysis we drew on, and neither has the consistent randomized trial record that magnesium, potassium, or omega-3 have. We are not quoting an effect size for them, because we could not find one we could stand behind.

Our read: skip them for this purpose. If they help you for another reason, that is a separate conversation.

What Can Work Against You

This is the section most supplement articles leave out, and it is the one that matters most if you take medication. Some natural products interfere with blood pressure medication, make readings worse, or change how your body handles drugs.

Plants and herbs to be cautious with:

• Licorice root. Contains a compound that imitates a hormone, leading to sodium retention and potassium depletion [20]. If you eat licorice candy regularly or take licorice root, mention it to your clinician.
• Asian ginseng. Acts as a stimulant and increases sympathetic nervous system activity.
• Bitter orange and guarana. Both can raise heart rate and blood pressure. They appear together in many "energy" and weight-loss blends, so read those labels.
• Yohimbe. Associated with severe cardiac side effects.
• Arnica. Can reduce the effectiveness of prescription medications, and swallowing it can cause cardiac harm. It belongs on your skin, not in your mouth.
• St John's wort. Interferes with the CYP3A4 enzyme pathway, changing how your body processes several cardiovascular drugs.

Nutrients to be cautious with:

• Vitamin E. Carries a bleeding risk [20], and it barely moved readings in people with normal numbers [18]. If you take an anticoagulant, this needs a conversation.
• Potassium. Risky if your kidneys filter poorly, and it interacts with several blood pressure medication categories [21].
• Magnesium. The 350 mg daily supplemental upper limit exists for a reason, and kidney disease changes the math [21].
• CoQ10. May interact with warfarin and other anticoagulants, so this needs a conversation with your clinician.

Talk to your clinician before you add anything if you take medication for blood pressure, a blood thinner, or have any degree of kidney disease. This is not a formality. Several items above change how your medication works or how your kidneys handle a mineral load.

The general rule behind all of it: "natural" describes where a compound came from, not whether it is safe alongside your prescription.

How Long It Takes to See Anything

Consistency is the whole game. A single dose tells you almost nothing, with one exception below.

Look at the trial durations we cited:

• Magnesium: median three months [1], most studies 12 weeks or longer [4]
• Omega-3: months of daily dosing at 2 to 4 grams [6]
• Beetroot juice: four weeks of daily drinking [9]
• CoQ10: eight to twelve weeks [12][13]
• Aged garlic extract: 12 weeks [14][15]
• Hibiscus tea: six weeks [17]

The pattern is four to twelve weeks of daily use before you would expect to see anything. Most of these nutrients work by gradually changing something in your system, not by producing an immediate effect.

The one exception is the acute beetroot study, where a single 500 mL serving produced a measurable short-term change [10]. That is a finding about how the nitrate pathway works, not a promise about long-term results.

What to track while you wait:

1. Take your readings at the same time each day, ideally in the morning before food or coffee.
2. Sit quietly for five minutes first, feet flat, arm supported at heart height.
3. Write the numbers down. Memory is unreliable and trends are invisible without a log.
4. Judge nothing before week four.
5. Bring the log to your clinician rather than describing it from memory.

How to Choose a Product

The label is where most supplement purchases go wrong. Here is the discipline.

Check the dose against the study. If the trial used 368 mg of magnesium daily and the capsule delivers 100 mg, you are not buying the studied dose. This is the most common mismatch in the category.

Check the form. Magnesium oxide, magnesium citrate, and magnesium glycinate are not interchangeable. Neither are ubiquinol and ubiquinone, or aged garlic extract and garlic powder. Match the form to the research.

Check for third-party testing. Independent verification of what is actually in the bottle separates a brand you can trust from one you are guessing about. Look for testing you can verify rather than a phrase on the front of the label.

Read the "other ingredients" panel. Fillers and proprietary blends are where unwanted ingredients hide. A proprietary blend can legally hide individual doses, which makes the dose check impossible.

Buy one thing at a time. Add four products on the same day and you have no idea which one caused what. Add one, wait four weeks, evaluate, then decide.

You can browse practitioner-grade options in our cardiovascular health collection, where products are curated rather than mass-market.

What We Recommend

Four products from the Agape catalog, each built around a nutrient covered above, at a form and dose you can check against the research. All four are practitioner-grade rather than mass-market. Match the form and the dose to the research, and take the list to your clinician if you take medication for blood pressure, a blood thinner, or have any degree of kidney disease.

• Protocols For Health, Omega 3X 1300 - 60 Softgels: one softgel carries 300 mg of EPA and 130 mg of DHA in MaxSimil monoglyceride form, and it holds IFOS five-star certification. $65.99

• Researched Nutritionals, CoQ10 Power 60 Softgels: an absorbable softgel CoQ10 made GMO-free and soy-free and carried in sunflower lipids, directed at one to three softgels daily. $66.98

• HumanN, SuperBeets Heart Chews Pomegranate Berry 60 Chews: two chews supply 150 mg of grape seed extract from the French Loire Valley plus non-GMO beet root powder, and the maker positions the polyphenol and nitrate pairing around nitric oxide availability. $39.95

• Integrative Therapeutics, Magnesium Glycinate Plus 120 Tablets: 220 mg of magnesium per two tablets as fully reacted glycinate, lysinate, and aspartate chelates, the amino acid bound forms the magnesium section describes as gentler on digestion. $29.25

Frequently Asked Questions

Do supplements for blood pressure actually work?

They can support blood pressure already within the normal range, and the honest effect sizes are small. In people with elevated readings, the best-studied nutrients produce changes of a few mm Hg [1][8][9]. In people with normal readings, the changes are much smaller, and some nutrients show no significant effect at all [18]. Treat them as one input among several.

Can I take these if I am already on blood pressure medication?

Talk to your clinician first, every time. Potassium interacts with blood pressure medications and is risky with impaired kidney function. CoQ10 can interact with warfarin and other anticoagulants. Vitamin E carries a bleeding risk. None of that means you cannot take them, only that the decision belongs with the person who knows your prescriptions.

How long before I notice anything?

Four to twelve weeks of daily use, based on the trial durations above [1][9][13][14][17]. Start your log before you start the product so you have a real baseline to compare against.

What is the best form of magnesium for blood pressure support?

Magnesium glycinate is generally the gentlest on digestion, and magnesium citrate is well absorbed though it has a mild laxative effect. Magnesium oxide is common in inexpensive products but poorly absorbed. Match the elemental dose to the lower end of the studied range, and stay under the 350 mg supplemental upper limit unless your clinician says otherwise.

Is beetroot juice or a beet supplement better?

The four-week trial that produced the most reliable result used 250 mL of beetroot juice daily [9]. Juice delivers nitrate reliably, but it also delivers sugar and takes daily effort. Concentrated beet products are more convenient, and the nitrate dose on the label is the number to compare. Either way, judge it at four weeks, not four days.

Does garlic have to be aged to work?

The trials with the largest effects used aged garlic extract standardized to S-allylcysteine, at 240 to 960 mg daily providing 0.6 to 2.4 mg of S-allylcysteine [14][15]. The older meta-analysis looked only at a dried garlic powder preparation and found the trial base thin and methodologically weak [16]. If you want to match the research, match the preparation.

Are there supplements to avoid with blood pressure medication?

Yes, and they are worth memorizing. Licorice root causes sodium retention and potassium depletion [20]. Asian ginseng, bitter orange, guarana, and yohimbe can raise heart rate or pressure. St John's wort interferes with how your body processes several cardiovascular drugs. Vitamin E carries a bleeding risk. Arnica can reduce the effectiveness of prescription medication.

Will a multivitamin cover this?

Unlikely. A multivitamin typically delivers magnesium, potassium, and omega-3 in amounts well below the doses used in the trials above. To match the research you generally need a standalone product at the studied dose, not a broad formula at token amounts.

References

1. Zhang X, Li Y, Del Gobbo LC, Rosanoff A, Wang J, Zhang W, Song Y. Effects of Magnesium Supplementation on Blood Pressure: A Meta-Analysis of Randomized Double-Blind Placebo-Controlled Trials. Hypertension. 2016;68(2):324-333. PMID 27402922. https://pubmed.ncbi.nlm.nih.gov/27402922/
2. Kass L, Weekes J, Carpenter L. Effect of magnesium supplementation on blood pressure: a meta-analysis. European Journal of Clinical Nutrition. 2012;66(4):411-418. PMID 22318649. https://pubmed.ncbi.nlm.nih.gov/22318649/
3. Jee SH, Miller ER, Guallar E, Singh VK, Appel LJ, Klag MJ. The effect of magnesium supplementation on blood pressure: a meta-analysis of randomized clinical trials. American Journal of Hypertension. 2002;15(8):691-696. PMID 12160191. https://pubmed.ncbi.nlm.nih.gov/12160191/
4. Mohammadi S, Palermo A, Ojani P, Alaghemand N, Pirayvatlou PS, Mirkarimi M, Mavi SA, Tahouri K, Shokouhifar S, Ettehad Y, Borzabadi A, Ashtary-Larky D. Comprehensive Effects of Magnesium Supplementation on Cardiometabolic Risk Factors: A Systematic Review and Dose-Response Meta-Analysis. Nutrients. 2026;18(15):2435. PMID 42588058. https://pubmed.ncbi.nlm.nih.gov/42588058/
5. Miller PE, Van Elswyk M, Alexander DD. Long-chain omega-3 fatty acids eicosapentaenoic acid and docosahexaenoic acid and blood pressure: a meta-analysis of randomized controlled trials. American Journal of Hypertension. 2014;27(7):885-896. PMID 24610882. https://pubmed.ncbi.nlm.nih.gov/24610882/
6. Geleijnse JM, Giltay EJ, Grobbee DE, Donders AR, Kok FJ. Blood pressure response to fish oil supplementation: metaregression analysis of randomized trials. Journal of Hypertension. 2002;20(8):1493-1499. PMID 12172309. https://pubmed.ncbi.nlm.nih.gov/12172309/
7. Appel LJ, Miller ER, Seidler AJ, Whelton PK. Does supplementation of diet with 'fish oil' reduce blood pressure? A meta-analysis of controlled clinical trials. Archives of Internal Medicine. 1993;153(12):1429-1438. PMID 8141868. https://pubmed.ncbi.nlm.nih.gov/8141868/
8. Whelton PK, He J, Cutler JA, Brancati FL, Appel LJ, Follmann D, Klag MJ. Effects of oral potassium on blood pressure. Meta-analysis of randomized controlled clinical trials. JAMA. 1997;277(20):1624-1632. PMID 9168293. https://pubmed.ncbi.nlm.nih.gov/9168293/
9. Kapil V, Khambata RS, Robertson A, Caulfield MJ, Ahluwalia A. Dietary nitrate provides sustained blood pressure lowering in hypertensive patients: a randomized, phase 2, double-blind, placebo-controlled study. Hypertension. 2015;65(2):320-327. PMID 25421976. https://pubmed.ncbi.nlm.nih.gov/25421976/
10. Webb AJ, Patel N, Loukogeorgakis S, Okorie M, Aboud Z, Misra S, Rashid R, Miall P, Deanfield J, Benjamin N, MacAllister R, Hobbs AJ, Ahluwalia A. Acute blood pressure lowering, vasoprotective, and antiplatelet properties of dietary nitrate via bioconversion to nitrite. Hypertension. 2008;51(3):784-790. PMID 18250365. https://pubmed.ncbi.nlm.nih.gov/18250365/
11. Hodgson JM, Watts GF, Playford DA, Burke V, Croft KD. Coenzyme Q10 improves blood pressure and glycaemic control: a controlled trial in subjects with type 2 diabetes. European Journal of Clinical Nutrition. 2002;56(11):1137-1142. PMID 12428181. https://pubmed.ncbi.nlm.nih.gov/12428181/
12. Mori TA, Burke V, Puddey I, Irish A, Cowpland CA, Beilin L, Dogra G, Watts GF. The effects of omega-3 fatty acids and coenzyme Q10 on blood pressure and heart rate in chronic kidney disease: a randomized controlled trial. Journal of Hypertension. 2009;27(9):1863-1872. PMID 19705518. https://pubmed.ncbi.nlm.nih.gov/19705518/
13. Mohseni M, Vafa MR, Hajimiresmail SJ, Zarrati M, Rahimi Forushani A, Bitarafan V, Shidfar F. Effects of coenzyme Q10 supplementation on serum lipoproteins, plasma fibrinogen, and blood pressure in patients with hyperlipidemia and myocardial infarction. Iranian Red Crescent Medical Journal. 2014;16(10):e16433. PMID 25763201. https://pubmed.ncbi.nlm.nih.gov/25763201/
14. Ried K, Frank OR, Stocks NP. Aged garlic extract reduces blood pressure in hypertensives: a dose-response trial. European Journal of Clinical Nutrition. 2013;67(1):64-70. PMID 23169470. https://pubmed.ncbi.nlm.nih.gov/23169470/
15. Ried K, Frank OR, Stocks NP. Aged garlic extract lowers blood pressure in patients with treated but uncontrolled hypertension: a randomised controlled trial. Maturitas. 2010;67(2):144-150. PMID 20594781. https://pubmed.ncbi.nlm.nih.gov/20594781/
16. Silagy CA, Neil HA. A meta-analysis of the effect of garlic on blood pressure. Journal of Hypertension. 1994;12(4):463-468. PMID 8064171. https://pubmed.ncbi.nlm.nih.gov/8064171/
17. McKay DL, Chen CY, Saltzman E, Blumberg JB. Hibiscus sabdariffa L. tea (tisane) lowers blood pressure in prehypertensive and mildly hypertensive adults. The Journal of Nutrition. 2010;140(2):298-303. PMID 20018807. https://pubmed.ncbi.nlm.nih.gov/20018807/
18. Behers BJ, Melchor J, Behers BM, Meng Z, Swanson PJ, Paterson HI, Mendez Araque SJ, Davis JL, Gerhold CJ, Shah RS, Thompson AJ, Patel BS, Mouratidis RW, Sweeney MJ. Vitamins and Minerals for Blood Pressure Reduction in the General, Normotensive Population: A Systematic Review and Meta-Analysis of Six Supplements. Nutrients. 2023;15(19):4223. PMID 37836507. https://pmc.ncbi.nlm.nih.gov/articles/PMC10574336/
19. Mente A, O'Donnell MJ, Rangarajan S, et al. Association of urinary sodium and potassium excretion with blood pressure. The New England Journal of Medicine. 2014;371(7):601-611. PMID 25119606. https://pubmed.ncbi.nlm.nih.gov/25119606/
20. Cleveland Clinic. Vitamins to Avoid With High Blood Pressure. Accessed 2026-09-24. https://health.clevelandclinic.org/vitamins-to-avoid-with-high-blood-pressure
21. Oregon State University Linus Pauling Institute, Micronutrient Information Center. High Blood Pressure. Accessed 2026-09-24. https://lpi.oregonstate.edu/mic/health-disease/high-blood-pressure

These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.