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A Message from Doctor’s Best

A Message from the Doctor's Best Team

A message from Vice President of Quality, Merry Liu, PhD. Dr. Liu is part of the Quality Group that ensures only top-quality ingredients with clinically proven benefits are utilized in all Doctor’s Best products.

Coenzyme Q10, also known as ubiquinone, ubidecarenone, coenzyme Q, and abbreviated at times to CoQ10, CoQ, or Q10, is a coenzyme that is ubiquitous in the bodies of most animals. It is a 1,4-benzoquinone, where Q refers to the quinone chemical group and 10 refers to the number of isoprenyl chemical subunits in its tail.

There are three redox states of CoQ10: fully oxidized (ubiquinone), semiquinone (ubisemiquinone), and fully reduced (ubiquinol). CoQ10 is fat-soluble, which resembles a vitamin, is present in most eukaryotic cells, primarily in the mitochondria. It is a component of the electron transport chain and participates in aerobic cellular respiration, which generates energy in the form of ATP. 95% of the human body’s energy is generated this way. Therefore, those organs with the highest energy requirements— such as the heart, liver, and kidney—have the highest CoQ10 concentrations.

CoQ10 deficiency can be caused by reduced biosynthesis and increased use by the body as early as in someone’s Mid 20s. It can also be caused by some chronic disease conditions such as cancer and heart diseases. Some medications such as Statins can reduce serum levels of CoQ10 by up to 40%.


CoQ10 used in the Doctor’s Best products has the identical molecular structure as that in the human body, is generally regarded as safe and well tolerated. CoQ10 Supplementation has the potential beneficial effects in the following areas: heart care, skin care, anti-aging, anti-fatigue, keeping fit, enhancing the immune system, sports nutrition and cosmetic applications.

Doctor’s Best only uses the CoQ10 made by Xiamen Kingdomway Group Company, the largest CoQ10 manufacturer in the world. It is commercially produced in large, sanitary grade, stainless steel fermenters by strictly following Good Manufacturing Procedure (GMP) and in compliance to US Pharmacopeia (USP), European Pharmacopeia (EP), Japanese Pharmacopeia (JP) and Chinese Pharmacopeia (CP).

Doctor’s Best offers CoQ10 products in nearly 20 different SKUs in various counts, doses and dosage forms. For details, please go to CoQ10 on our site. Take the Coenzyme Q10 today for your health, for your life!


Merry Liu, PhD