Is Coenzyme Q10 (CoQ10) Safe with Furosemide?
Free · No account · based on published sources including NIH ODS, FDA drug labels, and peer-reviewed literature
Consider CoQ10 supplementation 100-300mg daily with a fat-containing meal to enhance absorption. This is especially relevant in heart failure patients. Discuss with your cardiologist before starting.
Why this interaction occurs
Loop diuretics have been associated with reduced plasma CoQ10 levels, potentially by increasing urinary excretion of CoQ10 precursors or by oxidative stress-mediated depletion. CoQ10 is essential for mitochondrial ATP production in cardiac and skeletal muscle. Deficiency may worsen fatigue, exercise intolerance, and cardiac function — symptoms already prevalent in heart failure patients commonly treated with furosemide.
Evidence
Evidence level: limited.
Reported safety data
The FDA’s adverse event reporting system (FAERS) has received 274,011 reports mentioning Furosemide. This reflects reported cases involving the medication in general — not confirmed causation, and not specific to the Furosemide + supplement combination on this page.
FAERS reports are voluntary and cannot prove that a drug caused an event. Do not use report counts to assess the safety of this specific drug-supplement pair.
Frequently asked questions
Related interactions
All Coenzyme Q10 (CoQ10) interactions → · All Furosemide interactions →
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Educational only — not medical advice.
Always confirm with your doctor or pharmacist.