🧪 Supplement
coenzyme Q10
A mitochondrial antioxidant sold widely for heart and muscle health. Best-supported for improving sperm parameters (a surrogate fertility endpoint) and a modest blood-pressure reduction in cardiometabolic patients; genuinely contested for statin-related muscle symptoms and for migraine; and its heart-failure benefit rests on a single pivotal trial.
3 well-supported · 0 disputed. This shows how settled each sub-question is, not whether coenzyme Q10 is "good." Direction lives in each claim below.
The 5 claims about coenzyme Q10
Each keeps its own verdict — we never average them away.
Does CoQ10 improve sperm quality?
Strong support Yes for the lab numbers—it consistently raises sperm concentration and motility, though whether that means more pregnancies is far less certain.
Can CoQ10 help people with heart failure?
Leans support It leans helpful as an add-on for reduced-ejection-fraction heart failure, but rests heavily on a single pivotal trial still awaiting replication.
Can CoQ10 prevent migraines?
Leans support Maybe modestly in adults—one small positive trial leans supportive, but a pediatric trial was null and the overall evidence is thin.
Does CoQ10 lower blood pressure?
Contested Contested—older small trials say yes but a Cochrane review and newer trials found no reliable effect, so it's not a dependable blood-pressure treatment.
Does CoQ10 relieve statin-related muscle pain?
Contested Genuinely uncertain—meta-analyses split down the middle, and much statin muscle pain is a nocebo effect, so don't count on it.
Educational only, not medical advice. Hub descriptions are curated for honesty; see the methodology.