CoQ10 is a molecule your mitochondria use to produce cellular energy. It's also a potent endogenous antioxidant. Our research, from 60 RCTs, 17 meta-analyses, and 27,805 participants, shows it reliably reduces blood pressure, may improve heart failure outcomes, and shows strong evidence for depression symptom reduction. It's especially important for people on statins, which deplete the body's natural CoQ10.
Additive BP reduction
Monitor BP.
May reduce effectiveness
Monitor INR.
Reduces CoQ10 levels
Take at separate meals.
May increase drug absorption
Be aware.
May increase drug levels
Monitor.
Complex interaction
Likely not clinically significant.
Products found to contain 82-166% of labeled CoQ10. Some ubiquinone products also contained ubiquinol (not harmful, just mislabeled).
Not Prohibited.
Products found to contain 82-166% of labeled CoQ10. Some ubiquinone products also contained ubiquinol (not harmful, just mislabeled).
Based on independent third-party laboratory analysis
Category pass rate: ~70% — 6 Amazon best-sellers had <8% of claimed content (essentially empty).
Reviewed by the Scan Dose Research Team and Clinical Advisory Board | Last updated: April 5, 2026
Not medical advice. Based on published clinical research and systematic reviews.
Safety
Moderate interactions. Monitoring, timing separation, or dose adjustment may be required.
Warfarin
CoQ10 is structurally similar to vitamin K and may reduce warfarin efficacy.
Source: Clinical pharmacology
Blood pressure medications
CoQ10 may lower BP modestly.
Source: Clinical consensus
Chemotherapy
CoQ10 is an antioxidant. Theoretical concern about protecting cancer cells.
Source: Theoretical
Insulin and diabetes medications
CoQ10 may improve insulin sensitivity.
Source: Clinical consensus
Educational information only. This is not medical advice. These statements have not been evaluated by the FDA. Talk to your prescriber before starting, stopping, or combining any supplement with prescription medication.