CoQ10

Overview

Coenzyme Q10, also called ubiquinone, is an essential link in the mitochondrial electron transport chain that delivers electrons to oxygen and produces ATP and carbon dioxide. Without it, the cell shifts toward lactic acid production which triggers the growth-and-division program that defines the cancer state. The body produces its own CoQ10 through the same mevalonate pathway that makes cholesterol, which is why statin drugs that block that pathway also deplete CoQ10 and produce the muscle pain, rhabdomyolysis, cognitive decline, and cardiac problems associated with statin use. CoQ10 works as a system with vitamin K, vitamin E, and vitamin C, with each one stabilising and protecting the others at the mitochondrial site. It is protective across every organ system, but is best viewed as one piece of the larger oxidative metabolism puzzle that also includes thyroid function, low PUFA, and adequate cholesterol.

Key Points

• CoQ10 plugs directly into the mitochondrial electron transport chain. It fits at specific sites in the mitochondrion and delivers electrons to oxygen, allowing the production of ATP and carbon dioxide to complete. Without that link, electrons accumulate upstream in the reducing system, the cell cannot use oxygen efficiently, and metabolism shifts toward lactic acid production. CoQ10 is the necessary connection between oxygen and the reducing factors of the cell.

• The oxidized form (ubiquinone) is what tissues actually need, not the reduced form (ubiquinol) that supplement companies promote. Most products on the store shelf are sold as ubiquinol, often at roughly $40 a bottle versus $15 for ubiquinone, with marketing claims that ubiquinol is the body-preferred and more absorbable form. That argument is based on blood levels in young people and confuses association with causality. If the molecule is already in the reduced state it cannot accept electrons, which is the entire point of supplementing it. The oxidized ubiquinone is the version that prevents the buildup of electrons in the first place.

• A drop in the ubiquinone-to-ubiquinol ratio below 0.5 for 24 hours causes the cell to physically disintegrate electron transport chain complexes 1 and 2. A study showed that just being in a mitochondrially reduced state for 24 hours is all it takes for structural damage to occur to the cellular mitochondrial apparatus. Reversing the ratio back in favor of the oxidized form quickly restored function and the cell was able to resynthesize the dismantled complexes. This is a direct demonstration that functional problems cause structural damage.

• Lactate directly consumes ubiquinone, which is one of the mechanisms by which reductive stress dismantles mitochondria. When the cell overproduces lactate, lactate as a reductant has to be re-oxidized back to pyruvate, and one of the oxidizing agents it consumes in that process is ubiquinone (CoQ10). As ubiquinone gets depleted relative to ubiquinol, the cell senses that it cannot maintain oxidative metabolism and begins dismantling its mitochondria, which produces more lactate, which dismantles more mitochondria. This is the vicious cycle that ends in the pure Warburg effect with only glycolysis remaining.

• Statins poison the same enzyme that produces CoQ10. The mevalonate pathway makes cholesterol, CoQ10, steroid hormones, carotenoids, and other isoprenoids. Statins block it at the HMG-CoA reductase step. About 7% of statin users develop muscle pain, and exercise on statins greatly increases the risk of rhabdomyolysis where muscle dissolves - the debris can destroy the kidneys. The muscle pain is the visible side effect, but the same energy failure is happening in heart and brain mitochondria more silently.

• The same damage in the brain accounts for the depression, suicidality, and cognitive decline seen on statins. Brain mitochondria use the same CoQ10 system as muscle, so the cognitive effects accumulate even when no acute muscle pain appears. The advertised statin side effects of mood changes and dementia risk are downstream of the same mechanism that produces the muscle problems.

• CoQ10 works as a system with vitamin K, vitamin E, and vitamin C. Vitamin K is a quinone that stabilises and amplifies CoQ10 at the same mitochondrial site, and CoQ10 in turn stabilises vitamin K. Vitamin E protects them both, and vitamin C in its oxidised form keeps vitamin E in the right state. Progesterone holds the system together. None of them work in isolation; they are a coordinated electronic system in the cell.

• Being stuck in the antioxidant or reductive state is functionally the cancer state. When a cell cannot deliver electrons to oxygen, sulfhydryls reduce, the mitotic apparatus activates, and cells de-differentiate to become only able to grow, divide, and migrate. CoQ10 is the essential link that prevents electrons from going into this growth and cell division system instead of into oxidative completion. Vitamin K, structurally analogous to anti-cancer compounds like emodin and lapachol, works at the same site for the same reason.

• There is no firm consensus dose, and feeling is the best guide. Ray's view is that no one really knows the optimal dose, so the practical method is to monitor symptoms: muscle soreness, swelling, energy levels. If muscles and nerves are functioning well and there is no soreness, the dose is probably adequate. 100 mg per day is a common starting amount that many people use, including people on statins.

• CoQ10 protects all systems, not just the heart. Cardiologists prescribe it for fatigue alongside statins, but the same mitochondrial protection applies to brain, kidney, liver, and skeletal muscle. It can be used as part of recovery from any stress that damages oxidative metabolism, including angina, where Ray's preference is to use CoQ10 to address the underlying problem rather than relying on nitroglycerin to relieve symptoms.

• Topical CoQ10 is poorly absorbed but helpful when it does absorb. Squeezing a capsule of vitamin E and CoQ10 onto the skin can produce a real local effect, particularly for muscle or skin issues where the local concentration matters. Absorption is limited, but it is not zero, and oral and topical can be combined.

Notable Quotes

"The coenzyme Q10 is now known to fit very specifically in certain places in the mitochondria that deliver electrons to the electron transport system, delivering it ultimately to oxygen to complete the production of ATP and carbon dioxide. So it plugs right into the oxidative system."

[Ray Peat — KMUD: Antioxidant Theory and Continued War on Cancer]

"CoQ10 is one of the essential factors for oxidative metabolism. And when that's deficient, the failure of energy can reach the point where muscle cells are lacking functioning mitochondria."

[Ray Peat — KMUD: Medical Misinformation]

"CoQ10 is protective to all systems."

[Ray Peat — KMUD: Medical Misinformation]

"I don't think anyone really knows how to schedule the dosing. If you feel your muscles and nerves are functioning properly, don't get any muscle soreness or swelling, then the dose is probably enough."

[Ray Peat — KMUD: Medical Misinformation]

"Coenzyme Q10 helps it (mitochondria) to take in energy without producing destructive oxidative reactions. And vitamin K, which is a quinone analogous to emodin and the other anti-cancer and laxative substances, vitamin K increases the effectiveness of coenzyme Q10."

[Ray Peat — Politics & Science: Digestion]

"It's also a quinone, it's a benzoquinone. In fact, multiple studies have already tried using coenzyme Q10 for multiple diseases, and some of them are very successful, which kind of tells you that metabolic, maybe all diseases are metabolic, it's not just cancer, because they're so diverse that if one thing worked on so many of them, then it's got to be underlined principle that unites all of these diseases, despite what medicine says."

[Georgi Dinkov — Rethinking Cancer Through Cellular Energy & Metabolism with Georgi Dinkov]

Important Things To Consider

CoQ10 supplementation is essentially mandatory while on any statin. The chemistry of statins by definition lowers CoQ10, since both come from the same pathway. Cardiologists now routinely advise CoQ10 alongside statin prescription. Anyone taking a statin without supplementing CoQ10 is accepting cumulative mitochondrial damage to muscle, heart, and brain that no longer needs to be accepted.

Don't take CoQ10 and vitamin E together in the same dose or before bright light exposure. Ray's own paper chromatography experiments showed that vitamin E and CoQ10 form a charge-transfer complex that produces a black or greenish-black pigment when mixed. The bond is weak in vitro but in circulation this kind of complex becomes light-sensitive and can produce unwanted reactions. Spacing the two by a few hours, or staying out of bright sunlight for a few hours after taking them, avoids this.

Address the underlying cause of low energy, not just the symptoms. CoQ10 alone does not fix poor thyroid function, accumulated polyunsaturated fats, low cholesterol, or chronic stress. It is one component of the system that supports oxidative metabolism. Used to patch a stressed body without correcting thyroid, diet, and PUFA load, its effect is limited.

Liver is the main natural food source. Eating liver regularly supplies the whole spectrum together with the cofactors that work alongside it. This is more biologically coherent than isolated supplementation, though the two can be combined.

Statins cross the blood-brain barrier and cause the same kind of damage to brain mitochondria. The mood and cognitive effects of statin use are not separate side effects from the muscle effects; they are the same process happening in different tissue. CoQ10 supplementation helps in both locations, but Ray's preference is to address whether the cholesterol-lowering goal was justified in the first place, since he considers cholesterol over 200 protective for people over 50.

Buy ubiquinone (oxidized), not ubiquinol (reduced), even though ubiquinol is more aggressively marketed. A reduced molecule cannot accept electrons, so supplementing it does not address the underlying problem of electron buildup. The form that is actually needed inside the cell to prevent reductive stress is the oxidized version.

CoQ10 cannot rescue blocks at complex 1 or complex 4 of the electron transport chain. It only works at complex 2 and potentially complex 3. If the block is elsewhere, for example caused by nitric oxide binding to cytochrome c oxidase at complex 4, CoQ10 will not help.

Desiccated liver is the largest dietary source of ubiquinol, the reduced form. This is one reason Georgi has flagged caution around heavy desiccated liver use in people who may already be in a reductive state. Once consumed, ubiquinol shifts toward the ubiquinol form in the body and may worsen the redox imbalance rather than help it.

Where To Buy

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