Q10 supplements help regulate blood pressure

Cardiovascular disease remains the leading cause of death, and many people have high blood pressure without knowing it. Diet, lifestyle, and the natural ageing process all play a significant role. In addition, supplementation with Q10 appears to lower systolic blood pressure, especially when taken in appropriate doses over an extended period. This is highlighted in a meta-analysis published in the International Journal of Cardiology Cardiovascular Risk and Prevention. The researchers describe Q10 as a unique molecule with several mechanisms that benefit the circulatory system and blood pressure. The body's own Q10 production decreases with age and when using certain types of medication, and high blood pressure itself seems to increase the need for the compound.

High blood pressure and elevated heart rate are key contributors to cardiovascular disease and early death. High blood pressure increases the risk of ischemic heart disease, blood clots, stroke, other cardiovascular diseases, and premature death. Headaches, heart palpitations, dizziness, and nosebleeds may also be signs of elevated blood pressure.
Being overweight, abusing alcohol, and age-related changes raise the risk of hypertension. Type 2 diabetes and its precursor, metabolic syndrome, are also associated with high blood pressure.
Although hypertension should be managed, conventional medication can cause side effects such as fatigue, headache, nausea, insomnia, gout, and impotence. This is why there has been increasing interest in natural strategies for managing high blood pressure in recent decades.
Several studies have already shown that Q10 supplements can improve cardiovascular health and reduce the risk of premature death. However, studies have produced mixed results regarding Q10’s effects on blood pressure and heart rate. This may be due to factors such as too low a dose, too short a treatment period, or poor product quality. The aim of the new meta-analysis was to investigate how Q10 supplementation affects blood pressure and heart rate in adults.
By trawling various databases (PubMed, Web of Science, Scopus) and using relevant search terms, the researchers collected 45 randomized controlled trials (RCTs) from different countries. The studies were published up to February 2025. The researchers then examined the study methods, Q10 dosages, treatment durations, and results compared with placebo groups.
The meta-analysis revealed that Q10 supplementation significantly reduced systolic blood pressure by an average of 3.44 mmHg and up to 5.13 mmHg. There was no significant effect on diastolic blood pressure or heart rate. Subgroup analyses showed that the best effects occurred with daily doses of 100-200 mg and treatment durations longer than eight weeks. Furthermore, participants in poorer health often had lower Q10 levels in their blood and responded better to supplementation than the other participants.
The authors therefore conclude that Q10 supplements may be relevant as part of hypertension treatment, especially for patients looking for natural solutions without side effects.

• Blood pressure is considered elevated when systolic/diastolic pressure consistently exceeds 140/90 mmHg

Q10’s effects on blood pressure and cardiovascular health

Q10 appears to work through several underlying mechanisms in the regulation of blood pressure and cardiovascular function.
High blood pressure and cardiovascular disease are typically characterized by oxidative stress, where the number of free radicals exceeds the body’s antioxidant capacity. Free radicals are produced during energy metabolism and other metabolic processes, and their formation is strongly increased by ageing, smoking, toxic exposures, overweight, and chronic diseases such as type 2 diabetes, which is also marked by chronic inflammation.
With oxidative stress and inflammation, free radicals become unbalanced. There is a risk that they will attack the beneficial cholesterol, rendering it useless and causing it to accumulate in the vessel walls, which contributes to atherosclerosis.
Q10 appears to protect cholesterol and vessel walls from oxidative stress due to its powerful antioxidant properties. Its anti-inflammatory effect also helps increase the elasticity of the vessel walls and reduce arterial stiffness, which primarily affects systolic blood pressure. Other studies have shown that Q10 supplementation improves blood flow, which is crucial for maintaining normal blood pressure.
Q10 is also believed to support the activity of nitric oxide (NO), a molecule that is essential for normal function of the endothelial cells in blood vessels and for preventing unwanted contractions that can elevate blood pressure.
Q10 not only acts as a powerful antioxidant in the circulatory system but also plays a central role in cellular energy production in the mitochondria – the "powerhouses" of the cells. Since the heart beats around 100,000 times per day and requires large amounts of energy, it has a particularly high need for Q10.
Another potential mechanism involves the RAAS system (Renin-Angiotensin-Aldosterone System), which helps regulate blood pressure.
Q10 supplements should preferably be of pharmaceutical quality to ensure proper absorption and efficacy. The same beneficial effect cannot be expected from low-quality Q10 products.

Q10 synthesis through life and causes of deficiency

The body produces most of its own Q10, but production gradually declines with age. By the age of 70, the Q10 content in the heart is approximately half of what it was in early youth. Stress, certain diseases, and medications such as statins (for high cholesterol) and alendronate (for osteoporosis) are associated with reduced Q10 synthesis. Low Q10 levels have also been observed in many heart patients. High blood pressure in itself also appears to increase the need for Q10.

References:

Mehdi Karimi et al. Effects of Coenzyme Q10 administration on blood pressure and heart rate in adults: A systematic review and meta-analysis of randomized controlled trials. International Journal of Cardiology Cardiovascular Risk and Prevention. 2025

Adrianna Budzinska et al. The bisphosphonates alendronate and zoledronate induce adaptations of aerobic metabolism in permanent human endothelial cells. Scientific Reports 2023.

Lain Hargreaves et al. Disorders of Human Coenzyme Q10 Metabolism: An Overview. International Journal of Molecular Sciences. 2020