The Instability of Ubiquinol, Part 2 – Dog Studies

The results from large dog studies done by SIBR Research show that orally administered ubiquinol is mostly converted to the ubiquinone form of Coenzyme Q10 by the time it reaches the small intestines [Judy 2021 Part 2].

Dr Judy in the lab
Coenzyme Q10 is an essential bio-nutrient, especially important as we get older. It is a redox molecule with an oxidized state called ubiquinone and a reduced state called ubiquinol. Both are bio-active states. Ubiquinone supplements are more stable and much more tested than ubiquinol supplements. Ubiquinol by nature of being an electron donor is relatively quick to be oxidized to ubiquinone.

In the small intestines, it is then absorbed primarily as ubiquinone. Once it enters the lymph, it is increasingly converted back to ubiquinol.

By the time it leaves the lymph to enter the blood circulation, it is approximately 96 % ubiquinol again.

These findings beg the question: why buy a ubiquinol supplement when the ubiquinol will probably be converted to the ubiquinone form of Coenzyme Q10 prior to absorption?

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Coenzyme Q10 Supplementation for Elderly Persons

Supplementation with Coenzyme Q10 has primarily made use of the oxidized form called ubiquinone. It is the stable form of Coenzyme Q10, the form with which all the important clinical studies have been done involving elderly persons, heart failure patients, and Gulf War Illness patients [Alehagen 2013; Golomb 2014; Mortensen 2014].

Walk in autumn weather
When we reach the September of our years, our cells synthesize less and less of Coenzyme Q10, the essential bio-nutrient that is needed for ATP energy generation, for antioxidant defense against harmful free radicals, and for anti-inflammatory effects.

In study participants with low baseline selenium status, the combination of Coenzyme Q10 together with the essential trace element selenium appears to reduce the level of oxidative stress and inflammation and to delay or ameliorate the development of some age-related disorders [Aaseth 2021].

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