Topic · Supplement
CoQ10
CoQ10 is a fat-soluble compound your cells use to make energy, and you also get about 3 to 6 mg a day on average from meat, fish and nuts. Supplements run 100 to 300 mg. The evidence is mixed: modest signals for fatigue, migraine frequency and blood pressure, and no clear benefit for statin muscle pain or weight. Safety data look reassuring, though much comes from industry-linked sources.
CoQ10 FAQ
Does CoQ10 actually work?
It depends on the goal. A pooled analysis of 13 trials in 1,126 people found modestly lower fatigue scores than placebo. Small migraine trials, such as 300 mg a day for 3 months in 42 people, found fewer attacks. But pooled trials in statin users with muscle symptoms and in weight loss found no significant effect. Most of the evidence is small or low certainty.
Is ubiquinol better than ubiquinone?
Nobody can name a winner yet. Two small trials compared them on blood levels only and disagreed. In 12 healthy adults, 200 mg of ubiquinol raised levels more over 4 weeks, while in 21 older adults a single 100 mg dose showed no significant difference. Formulation matters too: an oil softgel absorbed best of four in a 10-person trial. Neither form was tested on outcomes.
How much CoQ10 should you take a day?
No official daily requirement exists. Trials mostly used 60 to 300 mg a day, and the migraine trials used 300 to 400 mg. A 2006 safety review, written by an industry trade body, found no dose-related side effects from 60 to 1,200 mg a day. Follow your product's label or your clinician's advice, because the right dose in a trial depended on the goal and the form.
Is CoQ10 safe to take every day?
Group data look reassuring. A 2006 review found no dose-related side effects from 60 to 1,200 mg a day, and a 13-trial analysis reported one gastrointestinal event among 602 people given CoQ10. But the controlled safety periods were short and several sources have industry ties. One 24-person trial found no INR change on warfarin at 100 mg. Ask a clinician first if you take medication.
Does CoQ10 help with statin muscle pain or cholesterol?
Not for muscle pain: 8 pooled trials in 472 statin users found no significant change in muscle pain or creatine kinase versus placebo. For cholesterol, 50 pooled trials found small average falls, about 5.5 mg/dL in total cholesterol and 3 mg/dL in LDL, with large disagreement between trials. Neither result is a reason to change a prescription. Talk to your prescriber.