Healthmasters’ CoQ10 Ubiquinol: New Research on Mitochondrial Efficiency, CoQ10 Maintenance, and Geranylgeraniol

Coenzyme Q10 is usually marketed as an “energy” nutrient, but that description can be misleading. CoQ10 is not a stimulant like caffeine, and it does not create an immediate surge of energy. Instead, it works inside mitochondria, the microscopic structures that convert nutrients into adenosine triphosphate, or ATP, which cells use to power their daily work [1].

New research published in 2026 provides a clearer picture of what this type of cellular support may actually mean. A randomized clinical trial found that six weeks of ubiquinol improved one measure of mitochondrial energy efficiency in healthy men, even though it did not necessarily improve their cycling endurance [1]. A separate human trial found that geranylgeraniol, commonly shortened to GG, maintained circulating CoQ10 levels during supplementation and produced a small testosterone increase in a very limited subgroup of men [2]. Another 2026 study identified reduced protein prenylation as one possible contributor to statin-related muscle damage and showed that geranylgeraniol helped reverse several of those changes in laboratory models [3].

These findings are directly relevant to Healthmasters’ CoQ10 Ubiquinol, which provides 100 mg of ubiquinol as DuoQuinol and 60 mg of trans-geranylgeraniol as GG-Gold in each softgel [4]. Healthmasters’ formula supplies both finished ubiquinol and GG, a naturally occurring compound involved in the body’s CoQ10-production and protein-prenylation pathways [2][4].

CoQ10’s Role Inside the Mitochondria

Mitochondria produce ATP through a multistep process known as oxidative phosphorylation [1]. During this process, electrons move through a group of proteins in the inner mitochondrial membrane. That movement helps create the force needed to produce ATP [1].

CoQ10 acts as a mobile electron carrier within this system [1]. It accepts electrons from earlier parts of the mitochondrial pathway and transports them to another protein complex so energy production can continue [1]. Without sufficient CoQ10, this process may become less efficient because electrons cannot move through the system as effectively [1].

CoQ10 exists mainly in two interchangeable forms. Ubiquinone is the oxidized form, while ubiquinol is the reduced form [1]. The body repeatedly converts one form into the other as CoQ10 accepts and transfers electrons. Ubiquinol also acts as a fat-soluble antioxidant that can help protect cell membranes from oxidative damage [1].

Healthmasters uses ubiquinol rather than relying on conventional ubiquinone [4]. This gives the body the reduced form of CoQ10 while also supplying GG, which participates in the pathway the body uses to manufacture its own CoQ10 [2][4].

The New Ubiquinol Study

The 2026 ubiquinol trial included 54 healthy, recreationally active men [1]. Participants were randomly assigned to take either 300 mg of ubiquinol daily or a placebo for six weeks [1]. Neither the participants nor the researchers conducting the testing knew who was receiving ubiquinol, reducing the risk that expectations influenced the results [1].

Before and after supplementation, the researchers examined mitochondrial respiration in skeletal-muscle samples [1]. They also tested the men during severe-intensity cycling to determine whether ubiquinol changed oxygen use or the amount of time participants could continue exercising before exhaustion [1].

As expected, ubiquinol supplementation substantially increased circulating CoQ10 levels [1]. More importantly, it reduced the inverse respiratory control ratio, a laboratory measurement used to estimate how much mitochondrial respiration is lost through energy leakage rather than being coupled to ATP production [1].

What “Improved Mitochondrial Coupling” Means

Mitochondria do not convert every bit of available fuel into usable ATP. Some of the energy involved in the process can escape as mitochondrial leak respiration [1].

A simple comparison is a car engine. Two engines might burn the same amount of fuel, but one may transfer more of that fuel into useful movement while the other loses more energy as heat. In a similar way, improved mitochondrial coupling means that a greater share of mitochondrial activity is connected with productive energy generation rather than leakage [1].

After six weeks, the ubiquinol group showed a lower proportion of leak respiration relative to its maximum energy-producing capacity [1]. The researchers interpreted this as evidence of improved oxidative-phosphorylation coupling efficiency [1].

This was a meaningful biological finding because previous CoQ10 studies had not consistently shown that supplementation could alter mitochondrial respiratory function in healthy people [1]. The study therefore provides direct evidence that ubiquinol may influence how efficiently mitochondria carry out part of the energy-production process [1].

Better Mitochondrial Efficiency Did Not Improve Exercise Endurance

The researchers also tested whether the mitochondrial change translated into better physical performance [1]. It did not.

Ubiquinol did not significantly improve the length of time participants could sustain severe-intensity cycling [1]. It also did not change end-exercise oxygen consumption or the pattern through which oxygen use increased during exercise [1].

This distinction is important. A supplement can produce a measurable change inside cells without creating an immediate improvement in athletic performance. Exercise capacity depends on many factors, including cardiovascular fitness, muscle conditioning, oxygen delivery, motivation, carbohydrate availability, and the intensity of the test.

The participants were also healthy and already recreationally active [1]. They may have had less room for improvement than older adults, people with low CoQ10 status, or individuals with mitochondrial dysfunction. The trial does not tell us whether the same mitochondrial change would produce more noticeable results in those populations [1].

So, in this study, ubiquinol improved a measurement of mitochondrial coupling efficiency, but it did not act as a performance-enhancing stimulant in this particular study [1].

Why the Dose Difference Matters

The clinical trial used 300 mg of ubiquinol per day, while Healthmasters’ CoQ10 Ubiquinol provides 100 mg per softgel [1][4]. Therefore, one softgel provides one-third of the daily ubiquinol dose used in the study. But with three softgels daily, a person can take the same dose of uniquinol as the participants in the study.

Still, dose, baseline CoQ10 status, age, health, and length of use can all influence the response.

Why Geranylgeraniol Is More Than an Add-On Ingredient

Geranylgeraniol is a naturally occurring isoprenoid, a type of fat-related compound used in several important biological pathways [2]. GG participates in the body’s production of CoQ10, vitamin K2 as menaquinone-4, certain steroid-related pathways, and a process called protein prenylation [2][3].

Protein prenylation sounds technical, but the basic concept is simple. Some proteins need a small fat-like attachment before they can move to the correct part of a cell and perform their jobs [3]. Geranylgeranyl groups provide one form of this attachment [3].

Without proper prenylation, proteins may be produced but fail to reach the cell membrane or other location where they are supposed to operate. This can disrupt signaling, metabolism, cell survival, and muscle function [3].

GG therefore does not simply act as another antioxidant. It supplies material used in pathways that help cells make CoQ10 and prepare certain proteins for normal function [2][3].

The New Human GG Trial

A 2026 study examined 300 mg of GG daily in 34 healthy adults between 40 and 65 years old [2]. The study lasted 18 weeks. All participants first took a placebo for eight weeks, completed a two-week washout period, and then took GG for eight weeks [2].

Across the full group, GG did not significantly change total testosterone, free testosterone, or sex-hormone-binding globulin [2]. It also did not significantly change those hormones among the female participants [2].

However, the researchers then performed a subgroup analysis involving eight men whose starting total testosterone was below 600 ng/dL [2]. In these eight men, total testosterone increased by an average of 28.44 ng/dL during GG supplementation [2].

That result was statistically significant, but it must be kept in context. It came from only eight men, and a starting testosterone level below 600 ng/dL is not necessarily considered medically deficient. The study also did not randomly assign the order of treatments because every participant took placebo first and GG second. That design makes it more difficult to rule out changes related to time, behavior, or treatment order [2].

The study’s lead author was employed by the sponsor, and another author served on the sponsor’s scientific advisory board. The investigators reported that the sponsor did not control participant interaction, data collection, statistical analysis, or the decision to publish, but the relationship remains relevant when judging the evidence [2].

The CoQ10 Finding May Be More Important Than the Testosterone Finding

The GG trial also measured serum CoQ10 [2]. CoQ10 levels declined significantly during the placebo phase but remained stable during GG supplementation [2].

This does not prove that GG substantially raises CoQ10 in every person. It suggests that GG may help maintain CoQ10 homeostasis, meaning the body’s ability to keep CoQ10 levels within a more stable range [2].

This finding makes biological sense because GG is involved in the pathway used for endogenous CoQ10 synthesis [2]. In plain language, GG supplies one of the materials the body can use while manufacturing its own CoQ10.

For Healthmasters’ CoQ10 Ubiquinol, this creates a logical two-part strategy. Ubiquinol provides CoQ10 directly, while GG supports a pathway involved in maintaining the body’s own CoQ10 supply [2][4].

Once again, the dose difference matters. The trial used 300 mg of GG per day, while Healthmasters provides 60 mg per softgel [2][4].

Statins, GG, and the Prenylation Pathway

Statins lower cholesterol by blocking an enzyme in the mevalonate pathway [3]. That pathway produces cholesterol, but it also produces compounds required to make CoQ10 and geranylgeranyl groups [3].

A 2026 Science Advances study investigated whether loss of protein prenylation contributes to statin-related muscle damage [3]. The researchers found that statin exposure disrupted geranylgeranylation, altered glucose metabolism inside muscle cells, activated the inflammatory NLRP3 pathway, and increased signals associated with muscle breakdown [3].

Geranylgeraniol restored parts of the affected pathway in laboratory experiments. It improved measures of glycolytic function and reduced several signs of muscle-cell stress and damage [3].

This provides an important scientific insight. Statin-related muscle effects may involve more than reduced CoQ10 alone. Interference with protein prenylation may also contribute [3].

However, the study used cells, engineered muscle tissues, and animal models rather than a clinical supplement trial in people experiencing statin-related muscle pain [3].

Yet, what the study does show is that GG is biologically relevant to a pathway that statins can disrupt and that restoring geranylgeraniol improved several aspects of muscle-cell metabolism under experimental conditions [3].

Conclusion

Healthmasters’ CoQ10 Ubiquinol combines 100 mg of ubiquinol with 60 mg of trans-geranylgeraniol in one softgel [4]. This pairing addresses cellular-energy biology from two different directions.

Ubiquinol directly supplies the reduced form of CoQ10 used in mitochondrial electron transfer and antioxidant protection [1]. GG supports endogenous CoQ10 production and provides material used for protein geranylgeranylation [2][3].

The new ubiquinol trial found that supplementation improved mitochondrial coupling efficiency, even though it did not improve severe-intensity exercise performance [1]. The new GG trial found that GG maintained CoQ10 levels during treatment and produced a small testosterone increase in a limited subgroup of eight men [2]. The statin study adds laboratory evidence that GG-related prenylation is important for healthy muscle metabolism [3].

Healthmasters’ CoQ10 Ubiquinol brings these two ingredients together by providing ready-made ubiquinol plus GG-Gold trans-geranylgeraniol [4]. It is a formula for people seeking support for mitochondrial efficiency, cellular energy production, antioxidant protection, and CoQ10-related pathways without relying on stimulant-based energy.

References

[1] Acton, J. P., Alsharif, N. S., Bond, J. W., Cocksedge, S. P., McLellan, A. G., Peden, D. L., Funnell, M. P., Dugdale, H. F., James, L. J., Ferguson, R. A., Clifford, T., & Bailey, S. J. (2026). Effect of six weeks ubiquinol supplementation on mitochondrial respiratory function and exercise capacity in healthy males. European Journal of Applied Physiology. Advance online publication. https://link.springer.com/article/10.1007/s00421-026-06275-w

[2] Jurgelewicz, M., D’Adamo, C. R., & Malaya, C. A. (2026). The effects of geranylgeraniol supplementation on testosterone in middle-aged healthy adults: An 18-week, single-group crossover placebo-controlled trial. Integrative Medicine: A Clinician’s Journal, 25(2), 12–19. https://pubmed.ncbi.nlm.nih.gov/42222203

[3] Robin, N., Barra, N. G., Foley, K. P., Li, Y. E., Tamrakar, A. K., Patoli, D., Rebalka, I. A., Cree, T., Bibby, K., Nguyen, K., et al. (2026). Statins promote muscle metabolic danger and NLRP3-mediated myopathy via lower protein-prenylation and YAP. Science Advances, 12(25), eadz3612. https://pubmed.ncbi.nlm.nih.gov/42319925

*The matters discussed in this article are for informational purposes only and not medical advice. Please consult your healthcare practitioner on the matters discussed herein.

*These statements have not been evaluated by the Food and Drug Administration. Healthmasters' products are not intended to diagnose, treat, cure, or prevent any disease.