Written by the BioBodyBoost Nutrition Team · Reviewed by a Registered Nutritionist (RNutr) · May 2026 · Our standards →
If you’ve been told your blood pressure is creeping up, your cholesterol is borderline, or you just have a family history you can’t ignore — the supplement aisle is confusing. Everything claims to support a healthy heart. Most of it is marketing. A handful of ingredients have genuine clinical evidence behind them.
This guide separates the two. No filler. No vague claims. Just what the research actually shows for each ingredient — and the honest limitations.
Problem: High blood pressure — something in your diet could genuinely help
High blood pressure affects around 1 in 3 UK adults. Most people are prescribed medication once it gets serious — but in the borderline or pre-hypertensive range, dietary nitrates from beetroot have clinical evidence that’s hard to ignore.
Here’s the mechanism: beetroot is naturally high in dietary nitrates. Your body converts these to nitric oxide — a signalling molecule that tells the walls of your blood vessels to relax. When blood vessels relax, they widen. Blood flows more easily. Pressure drops.
Multiple meta-analyses confirm beetroot supplementation produces significant reductions in both systolic and diastolic blood pressure — with effects in some studies comparable in magnitude to antihypertensive medication. The effect is dose-dependent and most pronounced in people who start with elevated blood pressure.
The BBB option: Red Punch combines concentrated beetroot extract with Montmorency cherry — halal certified, vegan, UK made.
Problem: High triglycerides and vascular inflammation — this is where omega-3 earns its reputation
Triglycerides are a type of fat in the blood. Elevated triglycerides are an independent cardiovascular risk factor that most people only find out about when they get a blood panel. Omega-3 fatty acids from marine sources (EPA and DHA specifically) are the most consistently evidenced supplement for reducing them.
Omega-3 doesn’t just address triglycerides. It reduces platelet aggregation (the tendency of blood cells to clump and contribute to clots), lowers resting heart rate, improves arterial flexibility, and has systemic anti-inflammatory effects on the vascular system. The 2019 REDUCE-IT trial — one of the most significant cardiovascular supplement studies ever run — showed high-dose EPA supplementation reduced major cardiovascular events by 25% in high-risk patients.
What matters is the form: EPA and DHA are the active marine omega-3s. ALA (from flaxseed and other plant sources) converts to EPA/DHA at less than 10% efficiency — plant omega-3 alone is not a substitute for marine sources.
The BBB option: OmegaBalance provides omega 3, 6 and 9 in a balanced daily formula — halal certified, UK made.
Problem: Blood that clots too easily, poor circulation — nattokinase is the ingredient most people haven’t heard of yet
Nattokinase is an enzyme derived from natto — a traditional Japanese fermented soybean food. It’s been used in Japan for decades and has a growing body of Western clinical research behind it. The mechanism is specific: nattokinase dissolves fibrin, the protein that forms blood clots, and also activates your body’s own plasminogen (a natural clot-dissolving compound). The result is improved blood fluidity and reduced clotting tendency.
A double-blind, placebo-controlled trial published in Hypertension Research found nattokinase supplementation over 8 weeks produced significant reductions in both systolic and diastolic blood pressure in adults with borderline hypertension. Separately, studies show it significantly reduces plasma fibrinogen — a cardiovascular risk marker elevated in people with clotting disorders and chronic inflammation.
Important caveat: nattokinase has real fibrinolytic activity. If you’re on warfarin or other anticoagulants, speak to your GP before taking it. The same mechanism that makes it useful is the one that could interact with blood-thinning medication.
The BBB option: CardioVital Natto Blend — therapeutic-dose nattokinase with complementary cardiovascular botanicals. Halal certified, vegan, UK made.
Problem: Oxidative stress damaging your arteries — this is where astaxanthin comes in
LDL cholesterol only becomes a problem when it oxidises. Oxidised LDL is the form that accumulates in arterial walls and forms plaques. Antioxidant activity in cardiovascular tissue — protecting LDL from oxidation and reducing inflammation in the arterial wall — is where astaxanthin earns its place.
Astaxanthin is the carotenoid that makes krill, salmon and flamingos pink. It’s one of the most potent natural antioxidants known, with activity 550 times greater than vitamin E in some assays. Research published in Nutrients confirmed astaxanthin reduces markers of LDL oxidation, improves endothelial function and reduces inflammatory CRP levels — the three key antioxidant mechanisms relevant to cardiovascular health.
The BBB option: AstaxaKrill delivers krill-bound EPA and DHA alongside natural astaxanthin and phosphatidylcholine — halal certified, UK made.
Quick reference: match your concern to the supplement
| Your concern | Best ingredient | Mechanism | Evidence |
|---|---|---|---|
| High / borderline blood pressure | Beetroot extract | Nitric oxide → vasodilation | Strong |
| High triglycerides, inflammation | Omega-3 EPA & DHA | Reduces triglycerides, anti-inflammatory | Very strong |
| Poor circulation, clotting tendency | Nattokinase | Fibrin dissolution, fibrinolysis | Good |
| LDL oxidation, arterial inflammation | Astaxanthin (krill) | Antioxidant, LDL protection | Moderate-strong |
| General cardiovascular maintenance | Omega-3 + curcumin stack | Multi-pathway anti-inflammatory | Strong |
All BioBodyBoost cardiovascular supplements are halal certified, GMP UK manufactured, free from artificial fillers.
What doesn’t have strong enough evidence to spend money on
In the interest of honesty: several popular “heart health” supplements have a much weaker evidence base than their marketing suggests.
CoQ10 has genuine biochemical rationale (it’s involved in mitochondrial energy production in cardiac muscle) but the clinical evidence for cardiovascular outcomes in healthy adults is inconsistent. The evidence is stronger for people on statins, which are known to deplete CoQ10.
Red yeast rice contains monacolin K — the same active compound as the statin lovastatin. It does reduce cholesterol, but it’s also subject to EU food supplement regulation that limits the monacolin K content to a level too low for clinical effect. Products that work are pharmaceutically active; products that comply with EU law often aren’t potent enough to show benefit.
Garlic supplements show modest blood pressure effects in studies but the evidence is not as consistent as beetroot. The active compound (allicin) is highly unstable and most supplements deliver very little of it by the time of consumption.
Frequently asked questions
Can heart health supplements replace blood pressure medication?
No. Supplements like beetroot and nattokinase have clinical evidence for modest blood pressure effects in the pre-hypertensive and borderline range. They are not replacements for prescribed antihypertensive medication. If your GP has prescribed blood pressure medication, continue taking it and discuss any supplementation with them before starting.
Are these supplements safe to take with statins?
Omega-3 and beetroot extract are generally considered safe alongside statins. Nattokinase has anticoagulant-adjacent activity and should be discussed with your prescribing doctor if you are on any cardiovascular medication. Astaxanthin has no known statin interactions at typical supplement doses.
How long do heart health supplements take to work?
Beetroot’s blood pressure effect is relatively fast — measurable changes in 2–4 weeks of daily use. Omega-3 effects on triglycerides typically take 6–12 weeks to reach their full impact. Nattokinase fibrinolytic effects build over 8–12 weeks. These are maintenance supplements, not acute interventions.
What’s the difference between omega-3, omega-6 and omega-9?
Omega-3 (EPA and DHA from marine sources) and omega-6 are both essential — your body can’t make them. Most Western diets are already very high in omega-6 from vegetable oils. Omega-9 (oleic acid, found in olive oil) is non-essential. For cardiovascular benefit, it’s the omega-3 EPA and DHA content that matters most — check the label for the actual EPA/DHA breakdown, not just total fish oil.
Are these supplements halal certified?
All BioBodyBoost cardiovascular supplements are halal approved — including the marine-sourced products (OmegaBalance, AstaxaKrill), which carry full supply chain halal certification covering the sourcing, processing and manufacturing stages.
Explore the full range: Halal Vitamins UK · Cardiovascular & Joint Health
Food supplements should not replace a varied diet or healthy lifestyle. This article does not constitute medical advice. If you have a diagnosed cardiovascular condition or take prescription medication — particularly anticoagulants, antihypertensives or statins — consult your GP before starting any new supplement.
