Additive BP reduction
Monitor BP.
May reduce effectiveness
Monitor INR.
May reduce CoQ10 levels
Take at separate meals.
May increase drug absorption
Be aware.
May increase drug levels
Monitor.
Complex interaction
Likely not clinically significant.
These interaction entries are pharmacologic cautions, not findings from the 13 sources cited above, except the blood pressure row. Evidence strength is labeled in each row.
Not Prohibited.
Based on independent third-party laboratory analysis
Category pass rate: ~70% — 6 Amazon best-sellers had <8% of claimed content (essentially empty).
Independently graded against 178,763 indexed supplements and 757 reviewed supplement and medication pairs, sourced from PubMed, FDA CAERS, openFDA, and NIH DSLD | Last updated: August 24, 2026
Not medical advice. Based on published clinical research and systematic reviews.
Safety
Warfarin
The clinical outcome is a reduced responsiveness to warfarin, leading to potential treatment failure and an increased risk of thrombosis.
Coenzyme Q10 is chemically similar to K-vitamins, which allows it to exhibit procoagulant effects that counteract the anticoagulant action of warfarin. This structural similarity may explain the reduced efficacy of warfarin when co-administered with Coenzyme Q10.
Mixed case reports. Monitor INR when starting or stopping CoQ10 supplementation.
CoQ10 structurally resembles vitamin K and may have weak vitamin K-like activity. Case reports document INR reduction in some warfarin users.
Blood pressure medications
Your prescriber may recommend this
This medicine can lower your CoQ10. Ask your prescriber whether you need it.
CoQ10 supplementation may attenuate beta-blocker-associated fatigue and muscle symptoms. Beneficial co-supplementation in users developing such symptoms on Nebivolol.
Nebivolol therapy may reduce endogenous CoQ10. Discuss CoQ10 supplementation with provider if developing fatigue or muscle symptoms.
Nebivolol therapy is associated with reduced endogenous CoQ10 levels via shared mevalonate / mitochondrial pathways. Statin-like CoQ10 depletion mechanism documented in beta-blocker users with mixed but supportive observational evidence.
Your prescriber may recommend this
This medicine can lower your CoQ10. Ask your prescriber whether you need it.
CoQ10 supplementation may attenuate beta-blocker-associated fatigue and muscle symptoms. Beneficial co-supplementation in users developing such symptoms on Bisoprolol.
Bisoprolol therapy may reduce endogenous CoQ10. Discuss CoQ10 supplementation with provider if developing fatigue or muscle symptoms.
Bisoprolol therapy is associated with reduced endogenous CoQ10 levels via shared mevalonate / mitochondrial pathways. Statin-like CoQ10 depletion mechanism documented in beta-blocker users with mixed but supportive observational evidence.
Your prescriber may recommend this
This medicine can lower your CoQ10. Ask your prescriber whether you need it.
CoQ10 supplementation may attenuate beta-blocker-associated fatigue and muscle symptoms. Beneficial co-supplementation in users developing such symptoms on Labetalol.
Labetalol therapy may reduce endogenous CoQ10. Discuss CoQ10 supplementation with provider if developing fatigue or muscle symptoms.
Labetalol therapy is associated with reduced endogenous CoQ10 levels via shared mevalonate / mitochondrial pathways. Statin-like CoQ10 depletion mechanism documented in beta-blocker users with mixed but supportive observational evidence.
Your prescriber may recommend this
This medicine can lower your CoQ10. Ask your prescriber whether you need it.
CoQ10 supplementation may attenuate beta-blocker-associated fatigue and muscle symptoms. Beneficial co-supplementation in users developing such symptoms on Carvedilol.
Carvedilol therapy may reduce endogenous CoQ10. Discuss CoQ10 supplementation with provider if developing fatigue or muscle symptoms.
Carvedilol therapy is associated with reduced endogenous CoQ10 levels via shared mevalonate / mitochondrial pathways. Statin-like CoQ10 depletion mechanism documented in beta-blocker users with mixed but supportive observational evidence.
Generally well tolerated. Possible mild additive BP effect.
Ubiquinol is the active reduced form of CoQ10. Same rationale as CoQ10 with Ramipril: mitochondrial and endothelial support.
Generally well tolerated. Possible mild additive BP effect.
Ubiquinol is the active reduced form of CoQ10. Same rationale as CoQ10 with Losartan: mitochondrial and endothelial support.
Generally well tolerated; possible mild additive BP effect.
CoQ10 supports mitochondrial function and endothelial health. ACE/ARB therapy is associated with improved cardiac function; CoQ10 may be complementary.
Generally well tolerated; possible mild additive BP effect.
CoQ10 supports mitochondrial function and endothelial health. ACE/ARB therapy is associated with improved cardiac function; CoQ10 may be complementary.
Generally well tolerated; possible mild additive BP effect.
CoQ10 supports mitochondrial function and endothelial health. ACE/ARB therapy is associated with improved cardiac function; CoQ10 may be complementary.
Generally well tolerated; possible mild additive BP effect.
CoQ10 supports mitochondrial function and endothelial health. ACE/ARB therapy is associated with improved cardiac function; CoQ10 may be complementary.
Generally well tolerated; possible mild additive BP effect.
CoQ10 supports mitochondrial function and endothelial health. ACE/ARB therapy is associated with improved cardiac function; CoQ10 may be complementary.
Generally well tolerated. Possible mild additive BP effect.
Ubiquinol is the active reduced form of CoQ10. Same rationale as CoQ10 with Lisinopril: mitochondrial and endothelial support.
Ubiquinol supplementation alternative to CoQ10 for beta-blocker users with absorption issues or older age.
Ubiquinol is the reduced (active) form of CoQ10 with higher bioavailability in older adults. Same mevalonate/mitochondrial rationale as CoQ10 supplementation in Atenolol users.
Ubiquinol supplementation alternative to CoQ10 for beta-blocker users with absorption issues or older age.
Ubiquinol is the reduced (active) form of CoQ10 with higher bioavailability in older adults. Same mevalonate/mitochondrial rationale as CoQ10 supplementation in Carvedilol users.
Ubiquinol supplementation alternative to CoQ10 for beta-blocker users with absorption issues or older age.
Ubiquinol is the reduced (active) form of CoQ10 with higher bioavailability in older adults. Same mevalonate/mitochondrial rationale as CoQ10 supplementation in Nebivolol users.
Ubiquinol supplementation alternative to CoQ10 for beta-blocker users with absorption issues or older age.
Ubiquinol is the reduced (active) form of CoQ10 with higher bioavailability in older adults. Same mevalonate/mitochondrial rationale as CoQ10 supplementation in Bisoprolol users.
Ubiquinol supplementation alternative to CoQ10 for beta-blocker users with absorption issues or older age.
Ubiquinol is the reduced (active) form of CoQ10 with higher bioavailability in older adults. Same mevalonate/mitochondrial rationale as CoQ10 supplementation in Labetalol users.
Ubiquinol supplementation alternative to CoQ10 for beta-blocker users with absorption issues or older age.
Ubiquinol is the reduced (active) form of CoQ10 with higher bioavailability in older adults. Same mevalonate/mitochondrial rationale as CoQ10 supplementation in Metoprolol users.
Ubiquinol supplementation alternative to CoQ10 for beta-blocker users with absorption issues or older age.
Ubiquinol is the reduced (active) form of CoQ10 with higher bioavailability in older adults. Same mevalonate/mitochondrial rationale as CoQ10 supplementation in Propranolol users.
Your prescriber may recommend this
This medicine can lower your CoQ10. Ask your prescriber whether you need it.
No interaction concern. Coenzyme Q10 and this beta-blocker are both used in migraine prevention, which is why they appear together in guidelines; evidence that CoQ10 relieves beta-blocker fatigue is not established, so no benefit is claimed.
Atenolol therapy may reduce endogenous CoQ10. Discuss CoQ10 supplementation with provider if developing fatigue or muscle symptoms.
Atenolol therapy is associated with reduced endogenous CoQ10 levels via shared mevalonate / mitochondrial pathways. Statin-like CoQ10 depletion mechanism documented in beta-blocker users with mixed but supportive observational evidence.
Your prescriber may recommend this
This medicine can lower your CoQ10. Ask your prescriber whether you need it.
No interaction concern. Coenzyme Q10 and this beta-blocker are both used in migraine prevention, which is why they appear together in guidelines; evidence that CoQ10 relieves beta-blocker fatigue is not established, so no benefit is claimed.
Metoprolol therapy may reduce endogenous CoQ10. Discuss CoQ10 supplementation with provider if developing fatigue or muscle symptoms.
Metoprolol therapy is associated with reduced endogenous CoQ10 levels via shared mevalonate / mitochondrial pathways. Statin-like CoQ10 depletion mechanism documented in beta-blocker users with mixed but supportive observational evidence.
Your prescriber may recommend this
This medicine can lower your CoQ10. Ask your prescriber whether you need it.
No interaction concern. Coenzyme Q10 and this beta-blocker are both used in migraine prevention, which is why they appear together in guidelines; evidence that CoQ10 relieves beta-blocker fatigue is not established, so no benefit is claimed.
Propranolol therapy may reduce endogenous CoQ10. Discuss CoQ10 supplementation with provider if developing fatigue or muscle symptoms.
Propranolol therapy is associated with reduced endogenous CoQ10 levels via shared mevalonate / mitochondrial pathways. Statin-like CoQ10 depletion mechanism documented in beta-blocker users with mixed but supportive observational evidence.
Insulin and diabetes medications
Mitochondrial support option for metformin users.
Ubiquinol is the reduced form of CoQ10 with potentially higher bioavailability in older adults.
No interaction concern. No benefit from combining them is claimed.
Metformin acts on mitochondrial complex I, potentially affecting CoQ10 utilization. CoQ10 supplementation may support mitochondrial function.
Chemotherapy
Basis: Theoretical
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.