Ubiquinol
Ubiquinol is the reduced form of coenzyme Q10, a fat-soluble compound the body makes itself and uses for energy production in mitochondria.
What it is studied for
The strongest rated effects first. Bars show the size of the effect, the letter grades the evidence, and each rating lists the studies behind it.
Could ubiquinol help with everyday fatigue?
There is an encouraging signal from a small trial in otherwise healthy people with mild fatigue. It is narrower evidence than a promise of more energy for everyone. Germany’s consumer advice service finds no established general benefit from Q10 supplements in healthy people. 1 2
Key studies
The most recent publications linked to Ubiquinol's ratings.
Why people take it
SuppCo community snapshot, 2026-09-28. Reasons for use are not evidence that it works.
Questions people ask
Is ubiquinol an essential daily supplement?
The body makes Q10; routine supplementation has no established general benefit for healthy people. 1
Does a lower GGT mean a healthier liver?
The short ubiquinol study measured an enzyme change, not treatment of liver disease. 3
What dose has been studied for mild fatigue?
The 12-week trial tested 100 mg and 150 mg daily. These study amounts are not a personal dosing recommendation. 2
Coenzyme Q10
PQQ