Coenzyme Q10: absorption, tissue uptake, metabolism and pharmacokinetics.
Level 5 - mechanism / opinion, no new human data
Narrative review of pharmacokinetic literature and animal data without systematic methodology.
PubMed 16551570 · doi:10.1080/10715760600617843
What was done
This is a narrative review summarizing existing published data on the absorption, tissue uptake, metabolism, and pharmacokinetics of coenzyme Q10 (CoQ10) in humans and animal models.
What was found
Dietary CoQ10 absorption is slow and limited due to high molecular weight and hydrophobicity, while solubilized formulations show enhanced bioavailability. Reported pharmacokinetic parameters include a Tmax around 6 hours and an elimination half-life of approximately 33 hours. The reference interval for plasma CoQ10 in healthy adults ranges from 0.40 to 1.91 micromol/l. Plasma increases correlate reasonably with ingested dose up to a certain point. High doses in animal studies result in uptake by all tissues, including heart and brain mitochondria.
Why it matters
It outlines foundational pharmacokinetic parameters—such as the 33-hour half-life and absorption limitations—that inform formulation selection and dosing strategies for CoQ10 supplementation.
Limits
The abstract describes an unsystematic narrative review with no defined literature search criteria or meta-analysis. Critical tissue uptake findings rely on animal models rather than direct human tissue measurement, and exact dose-response saturation limits are not numerically specified.
Cited by
- supports Coenzyme Q10 has low oral bioavailability.