Can CoQ10 lower blood pressure?


High blood pressure is a major risk factor for heart disease. Lifestyle measures are first-line treatments, but many people also take supplements like CoQ10 hoping to improve blood pressure. But what does the scientific evidence say on whether CoQ10 can actually lower elevated blood pressure?

Can CoQ10 lower blood pressure?

Understanding Blood Pressure

Blood pressure is the force exerted on artery walls as blood is pumped through the circulatory system by the heart. Key facts:

  • Recorded as two numbers, systolic pressure (when heart contracts) and diastolic pressure (when heart relaxes between beats).
  • Normal blood pressure is under 120/80 mmHg. Elevated is 120-129/ under 80 mmHg.
  • Hypertension is diagnosed at 130/80 mmHg or higher. Stage 1 is 130-139/80-89 and stage 2 is 140/90 or above.
  • Can often have no signs, requiring regular screening. Left uncontrolled, can cause serious cardiovascular diseases.
  • Managed through lifestyle changes like diet, exercise, weight control, and medications if needed.

Lowering blood pressure to within the normal range is critical to reduce risk of heart attack, stroke and kidney disease. This has prompted interest in alternative therapies like CoQ10 supplementation.

What is CoQ10?

Coenzyme Q10 (CoQ10) is an antioxidant compound produced naturally in the body that is vital for cellular energy.

  • Present in highest amounts in the heart, liver, kidneys and pancreas.
  • Also found in smaller quantities in foods like meat, fish, nuts and oils.
  • Available as a supplement, typically in capsules or softgels ranging from 30mg to 200mg.
  • Involved in processes like energy production, antioxidant activity, inflammation, circulation and blood vessel function.
  • Generally well tolerated. Adverse effects are unusual but may include nausea or stomach upset.

Some preliminary research indicates CoQ10 may help lower blood pressure, but what does the clinical evidence show?

How Could CoQ10 Potentially Reduce Blood Pressure?

Researchers have proposed a few theories on how CoQ10 supplementation may aid in lowering elevated blood pressure:

  • Improved endothelial function - CoQ10 assists with nitric oxide production to support healthy blood vessel activity.
  • Vasodilating effect - By enhancing nitric oxide, CoQ10 can act as a mild vasodilator to relax blood vessels.
  • Lower oxidative stress - The antioxidant properties help counter oxidative damage from high blood pressure.
  • Anti-inflammatory - CoQ10 can reduce inflammatory factors like IL-6 and CRP that are risk factors for hypertension.
  • Enhanced mitochondrial function - Better cellular energy supports overall cardiovascular function.

However, more clinical research is still needed to confirm these mechanisms in humans. The effects are likely modest overall.

Review of Clinical Research on CoQ10 and Blood Pressure

Here is a summary of the key scientific evidence on using CoQ10 to lower elevated blood pressure:

  • A meta-analysis of 12 clinical trials found CoQ10 significantly reduced systolic blood pressure by up to 17 mmHg and diastolic pressure by 10 mmHg. Greater effects with longer treatment.
  • In one study, CoQ10 at 200 mg/day for 10 weeks reduced systolic pressure an average of 17 mmHg and diastolic pressure by 10 mmHg compared to placebo. Study link.
  • CoQ10 combined with other supplements like selenium and magnesium lowered systolic and diastolic pressure more than CoQ10 alone in some trials. Study link.
  • A trial in elderly patients found CoQ10 significantly reduced sitting systolic pressure by 14 mmHg compared to placebo after 8 weeks. Study link.
  • However, other studies show minimal impact of CoQ10 on blood pressure. Effects seem most consistent in hypertension and older adults. Study 1, Study 2.

More extensive, high-quality research is still needed to confirm efficacy. But results are generally promising.

Is CoQ10 Effective at Lowering High Blood Pressure?

Based on the current evidence, CoQ10 supplementation may provide a modest reduction in systolic and diastolic blood pressure, but effects are variable.

  • Studies show an average decrease of up to 17 mmHg in systolic and 10 mmHg in diastolic pressure.
  • Effects appear most significant in people with existing hypertension compared to normal blood pressure.
  • Older adults may derive greater reductions in blood pressure from CoQ10.
  • Doses above 100 mg per day seem to have the best results.
  • Combining CoQ10 with other supplements like selenium or omega-3s may enhance the effects.
  • Length of supplementation for at least 10-12 weeks seems necessary for significant changes.
  • Any reductions in blood pressure could potentially lower cardiovascular disease risk.

However, the changes are relatively small compared to most anti-hypertensive medications. CoQ10 is unlikely to be effective as a sole treatment for hypertension.

Other Natural Supplements for Blood Pressure

Some other natural supplements under study for potentially lowering blood pressure include:

  • Omega-3 fatty acids: Found in fish oil. Shown to have a modest blood pressure-lowering effect, especially at high doses above 3 grams per day.
  • Magnesium: May act as a mild vasodilator to reduce blood pressure slightly. More research needed.
  • Garlic extract: Limited evidence it can lower systolic pressure by around 10 mmHg. Requires high doses.
  • Resveratrol: Antioxidant found in red wine and grapes. Early evidence it may provide a small reduction in pressure.
  • Nitrates: Found in beets, leafy greens and other vegetables. Some evidence it can dilate blood vessels when consumed regularly.
  • Vitamin C: Some observational studies link higher vitamin C intake with lower blood pressure. But effects in trials are inconsistent.

However, the overall effects of natural supplements are modest and quality of evidence is limited. They should not replace prescribed anti-hypertensive medications without medical guidance.

Lifestyle Changes Also Critical for Lowering Blood Pressure

Non-drug approaches like diet and lifestyle modifications should be the foundation when treating high blood pressure. Potentially beneficial lifestyle changes include:

  • Losing excess weight if overweight. Even shedding 10 lbs may lower blood pressure.
  • following an eating plan high in fruits, vegetables, fiber and lean protein, like the DASH diet.
  • Reducing sodium intake below 2,300 mg per day. Further restriction to 1,500 mg daily provides greater benefits.
  • Engaging in regular aerobic exercise such as brisk walking for 30+ minutes per day.
  • Limiting alcohol intake to no more than 1 drink per day for women or 2 for men.
  • Stopping smoking and minimizing stress through techniques like yoga or meditation.
  • Supplementing with additional potassium, magnesium and calcium.

Work closely with your doctor to implement impactful lifestyle modifications to maximize blood pressure reductions.

Should You Take CoQ10 for High Blood Pressure?

Talk to your physician before taking CoQ10 or any supplement, especially if you take blood pressure medications.

Some key points to consider about using CoQ10 for hypertension:

  • It should never replace prescription medication treatments without a doctor's guidance. Don't stop medication on your own.
  • Effects are mild compared to common blood pressure drugs. CoQ10 on its own is unlikely to be effective monotherapy.
  • May provide modest additive benefits when combined with medications, but monitoring is required.
  • Higher doses up to 200 mg per day seem most beneficial. Allow at least 10-12 weeks to assess impact.
  • Combining with other supplements like omega-3s or magnesium may enhance effects.
  • Make sure to continue lifestyle changes like diet, exercise and stress reduction.

For individuals with high blood pressure, CoQ10 used cautiously under medical supervision could provide modest additional reductions on top of standard treatment. But consult your physician before adding any supplements to your regimen.

Can CoQ10 lower blood pressure? Conclusion

In summary, the evidence suggests:

  • CoQ10 supplementation may provide relatively small decreases in systolic and diastolic blood pressure.
  • Effects are likely not large enough for CoQ10 to be used as a stand-alone treatment for hypertension.
  • May offer modest additive benefits when combined with medications, especially in older adults.
  • Requires doses of at least 100-200 mg taken consistently for a minimum of 10 weeks.
  • Any reduction could potentially help lower cardiovascular disease risk.
  • More rigorous research is still needed confirm long-term efficacy and ideal usage.
  • Speak to your doctor before taking CoQ10 or stopping any blood pressure medication.

While CoQ10 shows promise for mildly improving blood pressure control, it should only be used under medical supervision along with standard treatment approaches and healthy lifestyle changes.


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