
07/02/2025
CoQ10
Endothelial function plays a central role in various aspects of cardiovascular health, maintaining vascular homeostasis, regulating blood pressure, preventing platelet aggregation and controlling inflammation. Dozens of studies implicate endothelial dysfunction in the development and progression of atherosclerosis, coronary artery disease, heart attack and stroke, and significantly higher rates of cardiovascular events.
Disruptions in endothelial function appear to result from reduced levels of nitric oxide production and bioavailability, leading to impaired vasodilation, increased blood pressure, inflammation in arterial walls, platelet aggregation and vessel permeability. Common risk factors include insulin resistance, obesity, elevated LDL and reduced HDL cholesterol, ni****ne use and a family history of early cardiovascular disease. Mental stress, thought to be mediated through endothelin, is also associated with prolonged endothelial dysfunction, especially in women.
CoQ10 has long been recognized as a valuable component of overall cardiovascular protection, with a large body of research highlighting its therapeutic potential in hypertension, ischemic heart disease, heart failure, cardiomyopathies, dyslipidemia, obesity and a range of related risk factors and disorders. In studies, CoQ10 interventions are linked with significant improvements in endothelial function, better treatment outcomes in patients with heart failure and reduced mortality from cardiovascular causes. CoQ10 supplementation is critical for older patients, since deficiencies are common in chronic and age-related diseases, and in those taking statins.
Ubiquinol: the superior form of CoQ10
The reduced form of CoQ10, ubiquinol is an even more powerful ally in promoting endothelial function, decreasing inflammation and oxidative stress, and protecting other aspects of cardiovascular health.
Conventional CoQ10 supplements usually occur as ubiquinone, the oxidized form, which must be converted by the body to ubiquinol, the active form. But this process is slow and limited, and aging further hampers the body’s efficiency in absorbing and converting CoQ10. Ubiquinol supplements are identical to naturally occurring ubiquinol, requiring no conversion in the body to perform antioxidant functions. Compared to conventional CoQ10, ubiquinol is readily absorbed and significantly more bioavailable. In clinical trials, ubiquinol forms of CoQ10 were two to four times better absorbed than ubiquinone forms, resulting in markedly higher plasma CoQ10, with research demonstrating a five- to eight-fold increase in serum ubiquinol levels.
Ubiquinol supports heart health through a variety of mechanisms. Mitochondria serve as the primary energy source for the heart muscle, fueling its high-energy needs and aiding physiological processes vital for cardiovascular wellness. Any disruptions in mitochondrial function directly contribute to the development of cardiovascular disease. CoQ10 plays a central role in the mitochondrial respiratory chain, required for 95 percent of cellular ATP. It’s also a crucial antioxidant in the inner mitochondrial membrane, a major site of free radical production. By supporting mitochondrial health, ubiquinol protects endothelial cells against senescence, potentially delaying vascular aging.