Outcomes

What coq10 actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect size Evidence Dose Weeks Rank

Improve function in heart failure Proven strong benefit

Stronger pumping, better exercise tolerance, fewer hospital visits.

22 meta-analyses n=8.0k 2–1200 mg 4–106 wk #1/11

10416042·10766682·16882678·18487480 +18 more

large

22 meta-analyses n=8.0k Meta-analyzed I²=80%

2–1200 mg

4–106 wk

#1 /11

Reduce oxidative cell damage Likely strong benefit

Less oxidative damage to your cell membranes, proteins, and DNA.

21 meta-analyses n=6.1k 20–1200 mg 0–52 wk #1/30

18284711·19228872·22431837·22966414 +17 more

large

21 meta-analyses n=6.1k Meta-analyzed I²=97%

20–1200 mg

0–52 wk

#1 /30

Lower your blood pressure Likely modest benefit

Brings down both systolic and diastolic, especially when baseline runs high.

12 meta-analyses n=5.0k 20–1200 mg 4–26 wk #4/81

18487480·19228872·25474484·26935713 +8 more

small

12 meta-analyses n=5.0k Meta-analyzed I²=95%

20–1200 mg

4–26 wk

#4 /81

Reduce everyday fatigue Likely modest benefit

Less of that heavy, worn-out feeling that makes simple tasks feel like a chore.

7 meta-analyses n=1.6k 30–600 mg 8–106 wk #3/44

25282031·30371340·30943227·35644694 +3 more

small

7 meta-analyses n=1.6k Meta-analyzed I²=96%

30–600 mg

8–106 wk

#3 /44

Ease statin-related muscle pain Likely modest benefit

Less soreness from a medication your heart needs.

7 meta-analyses n=1.3k 100–600 mg 4–12 wk

22608359·25375075·30371340·31695332 +3 more

small

7 meta-analyses n=1.3k Meta-analyzed I²=93%

100–600 mg

4–12 wk

—

Feel full longer and crave less Not enough research

Genuine satiety replaces the constant urge to snack or overeat.

1 RCT n=— 50 mg 12 wk

26413493

—

1 RCT n=—

50 mg

12 wk

—

Improve overall diet quality Not enough research

You naturally gravitate toward more fiber, better fats, and less junk.

1 RCT n=— 50 mg 12 wk

26413493

—

1 RCT n=—

50 mg

12 wk

—

Build explosive fuel reserves in muscle Not enough research

Your muscles stockpile more of the compounds that power sprints and heavy lifts.

2 RCTs n=— 20–400 mg 4–8 wk

35623315·36139772

—

2 RCTs n=—

20–400 mg

4–8 wk

—

Outcome	Effect	Evidence	Dose	Weeks	Rank
Improve function in heart failure Proven strong benefit	large	22 meta-analyses n=8.0k Meta-analyzed	2–1200 mg	4–106 wk	#1/11
Reduce oxidative cell damage Likely strong benefit	large	21 meta-analyses n=6.1k Meta-analyzed	20–1200 mg	0–52 wk	#1/30
Lower your blood pressure Likely modest benefit	small	12 meta-analyses n=5.0k Meta-analyzed	20–1200 mg	4–26 wk	#4/81
Reduce everyday fatigue Likely modest benefit	small	7 meta-analyses n=1.6k Meta-analyzed	30–600 mg	8–106 wk	#3/44
Ease statin-related muscle pain Likely modest benefit	small	7 meta-analyses n=1.3k Meta-analyzed	100–600 mg	4–12 wk	—
Feel full longer and crave less Not enough research		1 RCT n=—	50 mg	12 wk	—
Improve overall diet quality Not enough research		1 RCT n=—	50 mg	12 wk	—
Build explosive fuel reserves in muscle Not enough research		2 RCTs n=—	20–400 mg	4–8 wk	—

Buy well

Recommended CoQ10 products

Real products that dose CoQ10 where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.

Chosen for adequate CoQ10 dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.

Risk profile

Adverse events and known drug interactions

Safety events

neutropenia (grade 3 or 4) severe

leukopenia (grade 3 or 4) severe

infection (grade 3) severe

diarrhea (grade 3) severe

vomiting (grade 3) severe

myopathy severe

non-ST-elevation acute coronary syndrome severe

heart failure exacerbation (hospitalization) severe

Drug interactions

Antithrombotic Agents major increases toxicity

Blood Glucose Lowering major decreases effect

Simvastatin major decreases concentration

Warfarin moderate decreases effect

Antihypertensives moderate additive

Lipid Modifying Agents moderate decreases concentration

Doxorubicin moderate unknown

Warfarin moderate decreases effect

Amitriptyline moderate decreases concentration

Co-studied with

Supplements that share evidence with coq10

Xylitol 12 shared outcomes · d=0.55
Peppermint 12 shared outcomes · d=0.55
Menthol 12 shared outcomes · d=0.55
Clove 12 shared outcomes · d=0.55
Camphor 12 shared outcomes · d=0.55
Vitamine 7 shared outcomes · d=0.40
Vitaminb9 7 shared outcomes · d=0.47
Royaljelly 4 shared outcomes · d=0.38
Coq10 4 shared outcomes · d=0.38
Sodiumchloride 3 shared outcomes · d=0.52
Nicotinamideadeninedinucleotide 1 shared outcome
Vitamina 1 shared outcome · d=0.63
Vitaminc 1 shared outcome · d=0.63
Vitamind 1 shared outcome · d=0.63
Vitaminb6 1 shared outcome · d=0.63
Vitaminb1 1 shared outcome · d=0.63
Selenium 1 shared outcome · d=0.63
Zinc 1 shared outcome · d=0.63
Omega3 1 shared outcome · d=0.63
Iron 1 shared outcome · d=0.63

Sources

Generated August 14, 2026

CoQ10

What coq10 actually does, by outcome

Recommended CoQ10 products

Adverse events and known drug interactions

Supplements that share evidence with coq10

More evidence for CoQ10

The Quiet Spark: From Beef Hearts to Broken Hearts—and the Paradoxes of CoQ10

Yellow Clues, Tired Hearts, and the Mitochondrial Messenger: The Real Story of Ubiquinone

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CoQ10 for Heart Failure: A Systematic Evidence Review

CoQ10 for Sperm Motility Fertility: 10-Trial Evidence

CoQ10 for Lower LDL: What 14 Studies Actually Show

CoQ10

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More evidence for CoQ10

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NewYellow Clues, Tired Hearts, and the Mitochondrial Messenger: The Real Story of Ubiquinone

NewThe 10 Supplements With Real Evidence for Faster Thinking

NewCoQ10 for Heart Failure: A Systematic Evidence Review

NewCoQ10 for Sperm Motility Fertility: 10-Trial Evidence

NewCoQ10 for Lower LDL: What 14 Studies Actually Show

The Quiet Spark: From Beef Hearts to Broken Hearts—and the Paradoxes of CoQ10

Yellow Clues, Tired Hearts, and the Mitochondrial Messenger: The Real Story of Ubiquinone

The 10 Supplements With Real Evidence for Faster Thinking

CoQ10 for Heart Failure: A Systematic Evidence Review

CoQ10 for Sperm Motility Fertility: 10-Trial Evidence

CoQ10 for Lower LDL: What 14 Studies Actually Show