Written by AT. Chintan Dalal, N.D. · Reviewed by Dr Krushal Pabari, Clinical Team, Cure4Pain · Updated 30 October 2026
Key facts
CoQ10 (coenzyme Q10) is a substance the body makes, with the highest levels in the heart, liver, kidneys and pancreas, according to the US National Center for Complementary and Integrative Health (NCCIH) [1]. The evidence on deaths and hospital stays comes from heart failure: a 2021 Cochrane review found CoQ10 probably lowers both, yet also judged the evidence not convincing either way [2]. Meta-analyses disagree on whether CoQ10 eases statin muscle pain [3] [4] and prevents migraine [5] [6]. Fibromyalgia trials of CoQ10 are small, and the largest, of a combination product, did not improve fatigue more than placebo [7]. The US National Cancer Institute says CoQ10 can reduce the response to warfarin [8], although a small randomised trial found no change [9]. Food supplies only about 3 to 6 mg of CoQ10 a day on average, according to a 2010 review [10].

Scientific explainer videos in our Resources section
In our Resources section, our clinical team discusses vitamin D, its cofactors and how autoimmune, lifestyle and pain conditions develop.
What is CoQ10, and can your levels be low?
CoQ10 (coenzyme Q10) is a fat-soluble molecule that carries electrons in mitochondria, the parts of cells that produce energy, and it also acts as an antioxidant, according to a 2021 Cochrane review [2]. Your body makes it, and CoQ10 levels can be lower with statin use, in older age, in heart failure and in fibromyalgia, which is why supplements have been tested.
- Statin use: a 2015 meta-analysis of placebo-controlled trials found lower blood CoQ10 with atorvastatin, simvastatin, rosuvastatin and pravastatin [11].
- Older age: CoQ10 production falls in older adults, as the authors of a 2020 study of people aged 65 to 74 note [12].
- Heart failure: according to the Cochrane review, the severity of heart failure correlates with the severity of CoQ10 deficiency [2].
- Fibromyalgia: a small study of 30 women with fibromyalgia and 20 healthy women found less CoQ10 in the blood cells of those with fibromyalgia [13].
A low level does not by itself show that a supplement will help. In a Danish study of 64 people on simvastatin, muscle CoQ10 was similar in those with and without muscle pain, and in 20 people with untreated high cholesterol [14].
What does the research show for each condition?
Evidence for CoQ10 is mixed: heart failure has trials reporting deaths and hospital stays, meta-analyses disagree on statin muscle pain and migraine, and studies in fibromyalgia and fertility are small or low in certainty.

Does CoQ10 help statin muscle pain?
Whether CoQ10 eases statin muscle pain is not settled: meta-analyses by Qu 2018 and Kovacic 2025 found less pain [3] [15], while Banach 2015, Kennedy 2020 and Wei 2022 found no significant benefit [16] [4] [17]. The UK’s NICE advises against offering CoQ10 to help people stay on a statin (recommendation from 2014) [18], and NCCIH, in a page last updated in January 2019, says the overall evidence does not support it for statin muscle pain [1].
| Meta-analysis | Trials and people | Result |
|---|---|---|
| Banach 2015 | 6 trials, 302 people | No significant effect on muscle pain or creatine kinase, a muscle enzyme [16] |
| Qu 2018 | 12 trials, 575 people | Less muscle pain, weakness, cramps and tiredness; creatine kinase unchanged [3] |
| Kennedy 2020 | 7 trials, 321 people | No benefit for muscle pain; no change in the share of people staying on a statin [4] |
| Wei 2022 | 8 trials, 472 people | No significant benefit for muscle pain [17] |
| Kovacic 2025 | 7 trials, 389 people | Lower pain intensity, close to the line of no effect; 4 of 7 trials were positive [15] |
One small trial stands out for confirming the problem first: of 120 people with past statin muscle pain, only 36% developed symptoms in a blinded statin versus placebo test. Among 41 confirmed patients, 600 mg a day of ubiquinol, a form of CoQ10, for 8 weeks did not reduce pain [19].
Our article on your cholesterol report explains the numbers behind statin decisions. Muscle pain on a statin is a reason to speak to your doctor, not to stop the medicine yourself.
Does CoQ10 help migraine?
CoQ10 may reduce how often migraine attacks occur, by about 1.5 to 1.9 attacks in four of six meta-analyses [5] [20] [21] [22], but reviews and guidelines differ. Most meta-analyses are small, and they do not agree on severity or duration.
| Meta-analysis | Trials and people | Result |
|---|---|---|
| Okoli 2019 | 2 trials, 97 adults | No significant effect; evidence insufficient to know [6] |
| Zeng 2019 | 5 studies, 346 people | Fewer migraine days and shorter attacks; attacks a month and severity no different [23] |
| Parohan 2020 | 4 trials, 221 people | About 1.9 fewer attacks a month; severity and duration no different [20] |
| Sazali 2021 | 6 trials, 371 adults | About 1.5 fewer attacks and shorter attacks; severity no different [5] |
| Talandashti 2025 | 22 supplement trials | Fewer, shorter and less severe attacks with CoQ10 [21] |
| Peng 2026 | 14 trials of 5 supplement groups, 791 adults | About 1.9 fewer attacks a month with CoQ10; no supplement significantly shortened attacks; only magnesium lowered severity [22] |
Guidelines also differ, and a trial in children found no added benefit:
- Canadian Headache Society, 2012: strong recommendation for CoQ10 in migraine prevention, one of 11 preventive treatments given that grade, with the quality of evidence across treatments ranging from high to low [24].
- American Academy of Neurology and American Headache Society, 2012: CoQ10 rated “possibly effective” (Level C) for preventing episodic migraine [25], in a guideline the Academy retired in 2015 [26].
- NICE CG150, UK: its recommendations name riboflavin and do not mention CoQ10 [27].
- Migraine trial in children and adolescents: with CoQ10 100 mg added to standard treatment, there was no difference from placebo at day 224, and both groups improved. The authors said any earlier improvement with CoQ10 needs a larger trial [28].
This amount is a study fact, not advice. Read more on our migraine and headache page and in our article on migraine diet and triggers.
Does CoQ10 help fibromyalgia?
Small fibromyalgia trials report less pain with CoQ10 [29] [30], but the largest trial, of a CoQ10, tryptophan and magnesium combination, did not improve fatigue more than placebo [7]. We found no meta-analysis of CoQ10 alone in fibromyalgia.
- Trial of 20 people with fibromyalgia: CoQ10 300 mg a day for 40 days reduced pain, fatigue, morning tiredness and tender points more than placebo [29].
- Trial of 11 people on pregabalin: adding CoQ10 reduced pain and anxiety more than pregabalin alone [30].
- Largest trial, 89 people who finished, almost all women: a combination of CoQ10, tryptophan and magnesium did not improve fatigue, the main goal, more than placebo: fatigue improved significantly in the placebo group, with a non-significant reduction in the supplement group. Pain fell in both groups. Sleep quality, functional impact and the total score improved in the supplement group [7].
- 2024 systematic review: most of 15 fibromyalgia studies reported improvement, and side effects were minor [31].
The 2017 European EULAR recommendations for fibromyalgia give their only strong therapy recommendation to exercise [32]. Read more on our fibromyalgia page and in our article on vitamin D, thiamine and other nutrients in fibromyalgia.
Does CoQ10 help heart failure?
CoQ10 may lower deaths and hospital stays in heart failure when added to standard treatment, but reviewers remain cautious: a 2021 Cochrane review found a probable reduction, yet judged the evidence not convincing either way [2]. NCCIH, in its page last updated in January 2019, calls the research inconclusive [1]. CoQ10 has not been shown to replace any heart failure medicine.
- Q-SYMBIO trial, 2014: 420 people with moderate to severe heart failure took CoQ10 100 mg three times a day or placebo with standard therapy. There was no significant change at 16 weeks. At 2 years, major cardiovascular events, the main long-term measure, occurred in 15% on CoQ10 against 26% on placebo, and deaths, a secondary measure, in 10% against 18% [33].
- Cochrane review, 2021: 11 studies with 1,573 people. CoQ10 probably reduces deaths (from one trial of 420 people) and heart failure hospital stays, with moderate-quality evidence, yet all studies had unclear or high risk of bias, and the authors judged the evidence not convincing either way [2].
- 2024 meta-analysis of CoQ10 in heart failure: 33 studies found lower all-cause mortality (relative risk 0.64) and fewer heart failure hospital stays (relative risk 0.50) [34].
- UK health technology assessment, 2022: this review of CoQ10 in chronic heart failure with reduced ejection fraction included 26 trials with 2,250 people. It pooled deaths from 7 trials with 1,371 people and suggested a possible benefit (relative risk 0.68, with a range that includes no effect). The authors raised concerns about bias and asked for stronger evidence before NHS prescription [35].
- Australian guideline authors, 2020: CoQ10 may decrease deaths and hospital stays, but definite conclusions cannot be drawn, and they advise favouring treatments clearly shown to lower mortality [36].
Does CoQ10 help fertility?
CoQ10 may improve some measures in fertility treatment and sperm tests, but evidence for live births is weak: a 2020 meta-analysis of 449 women found no difference in live births [37], and a 2024 umbrella review of nutrient supplements in female infertility rated the evidence very low in certainty [38].
- Women in IVF and related treatment: a 2020 meta-analysis of 5 trials with 449 women found clinical pregnancy in 28.8% on CoQ10 against 14.1% on placebo or no treatment, with no difference in live births or miscarriages [37]. A later review of 3 clinical studies in 326 women reported more live births in those with poor ovarian response [39].
- Overall view: a 2024 umbrella review rated the evidence very low in certainty and insufficient to recommend nutrient supplements for female infertility [38].
- Men: a review of 50 trials of supplements found no effect on pregnancy or live birth; CoQ10 improved sperm motility, and certainty was generally low or very low [40]. A review of selenium, carnitine and CoQ10 found no difference in pregnancy rates and called study quality poor [41].
Does CoQ10 lower blood pressure or help anything else?
CoQ10 results for blood pressure and fatigue are mixed, and a phase III trial of 600 people with early Parkinson’s disease found no clinical benefit [42].
- Blood pressure: a 2016 Cochrane review of 2 trials with 50 people with primary hypertension found no clinically significant effect [43]. A 2022 meta-analysis of 26 studies in 1,831 people with cardiometabolic conditions found systolic pressure 4.77 mmHg lower [44], while a 2026 meta-analysis in prediabetes and type 2 diabetes found no significant change [45].
- Fatigue: 10 of 16 studies in a 2019 systematic review reported less fatigue, across very different groups [46], but a 2026 meta-analysis in people with depression found no significant benefit, from only 2 trials [47]. Our article on why you may always feel tired covers the commoner causes.
- Parkinson’s disease: a phase III trial of 600 people with early disease, using CoQ10 1,200 or 2,400 mg a day with vitamin E for up to 16 months, showed no clinical benefit and was stopped early under a preset futility rule [42].
Ubiquinol or ubiquinone: which form is better?
Neither ubiquinol nor ubiquinone has been shown to be better for symptoms: our PubMed search (October 2026) of randomised trials naming both forms found none comparing them on symptoms. Studies compare blood levels, and the carrier in the capsule seems to matter as well as the form.
- For ubiquinol: in 12 healthy volunteers taking 200 mg a day for 4 weeks, total CoQ10 rose from 0.9 to 4.3 µg/mL with ubiquinol and from 0.9 to 2.5 µg/mL with ubiquinone [48]. In 10 older men, ubiquinol raised levels significantly and ubiquinone did not, though 2 of the 10 responded more to ubiquinone [49].
- No clear difference: in 21 adults aged 65 to 74, a single dose of ubiquinol was not significantly better absorbed than ubiquinone capsules. CoQ10 appeared in the blood mostly as ubiquinol whichever form was taken [12].
- Formulation: in 14 young adults testing seven products, the two best absorbed were soft-gel capsules, one of each form, and people varied widely [50].
CoQ10 is absorbed best with fat, according to the US National Cancer Institute [8].
Is CoQ10 safe? Side effects and interactions
No serious side effects of CoQ10 have been reported, according to NCCIH, but it may interact with warfarin and insulin and may not be compatible with some types of cancer treatment [1].
- Side effects: NCCIH lists mild insomnia or digestive upset [1]; the US National Cancer Institute also lists rash, nausea, upper abdominal pain, dizziness, headache, heartburn and fatigue, and reports raised liver enzymes with 300 mg a day over long periods, though no liver toxicity [8].
- In trials: Q-SYMBIO described 2 years of treatment as safe [33], and the Parkinson’s trial reported no safety concerns at the doses it tested [42].
- Warfarin: the evidence conflicts. The US National Cancer Institute says CoQ10 can reduce the response to warfarin [8], and case reports describe this, including a 72-year-old woman whose response returned when she stopped it [51]. Yet a randomised crossover trial of 24 outpatients on 100 mg a day for four weeks found stable INR (the warfarin blood test) and an unchanged warfarin dose [9]. That trial was small and short, so tell the doctor who monitors your INR before you start or stop CoQ10.
- Insulin: the US National Cancer Institute says CoQ10 can lower insulin needs in people with diabetes [8]; NCCIH also lists an interaction with insulin [1].
- Cancer treatment: NCCIH says CoQ10 may not be compatible with some types of cancer treatment [1]. The US National Cancer Institute reports an observational study of 1,134 people with breast cancer, which suggested that antioxidant supplements, including CoQ10, taken before and during treatment may be associated with more recurrence and lower survival; an observational study cannot show cause [8]. Tell your cancer team before taking it.
- Other medicines: according to the US National Cancer Institute, statins, gemfibrozil and some blood-sugar-lowering medicines can lower CoQ10 levels, and beta-blockers can inhibit CoQ10-dependent enzymes [8].
- Pregnancy and breastfeeding: the NCCIH and National Cancer Institute pages we read give no safety guidance for this, so please ask your doctor first [1] [8].
Which foods contain CoQ10?
Meat, fish, nuts and some oils are the richest food sources; most dairy products, vegetables, fruits and cereals contain much less, according to a 2010 review [10]. The same review puts average dietary intake at only 3 to 6 mg a day, and content varies by food and origin. Most of the trials above used 100 mg a day or more, so food alone does not reach the amounts tested in those studies.
How we use CoQ10 at Cure4Pain
At Cure4Pain, CoQ10 is part of our orthomolecular medicine work for fibromyalgia, and it is among the nutrients we use for migraine.
- Fibromyalgia: CoQ10 and omega-3 are used for energy, as described on our fibromyalgia page. The research above is small, and the largest trial, of a combination product, did not improve fatigue more than placebo.
- Migraine: coenzyme Q10 is among the nutrients we use, within official limits where these exist, as our migraine page describes.
- Medicines stay: statins, warfarin, insulin and heart failure medicines continue under clinical guidance from Team Cure4Pain, in coordination with your existing consulting physician and your cardiologist or other specialist; never stop or change them on your own.
This is our clinic practice; individual results vary, and further studies are needed.
If you would like to discuss whether a supplement fits your condition and your medicines, you can book a consultation, online from anywhere or at our Mumbai clinic.
Frequently asked questions
What does CoQ10 do in the body?
CoQ10 carries electrons in mitochondria, the parts of cells that produce energy, and acts as an antioxidant. The body makes it, with the highest levels in the heart, liver, kidneys and pancreas. [2] [1]
What is CoQ10 good for?
The strongest evidence for CoQ10 is in heart failure, alongside standard treatment, though reviewers remain cautious. Results for migraine and statin muscle pain conflict, fibromyalgia trials are small, and a large Parkinson’s trial found no benefit. [2] [5] [4] [42]
Should I take CoQ10 with a statin?
Statins lower circulating CoQ10, but meta-analyses disagree on whether supplements ease muscle pain, and NICE advises against offering it to help people stay on a statin. Ask your doctor, and do not stop a statin yourself. [11] [3] [4] [18]
Does CoQ10 help prevent migraines?
Four of the six meta-analyses we list found about 1.5 to 1.9 fewer migraine attacks with CoQ10, one found attacks no different from placebo, and one judged the evidence insufficient; results on severity and duration differ. A 2012 Canadian guideline gave CoQ10 a strong recommendation; NICE’s recommendations do not mention it. [5] [20] [21] [22] [23] [6] [24] [27]
Is ubiquinol better than ubiquinone?
Some small studies show higher blood levels with ubiquinol, while others find no significant difference. No randomised trial we found compares the two forms on symptoms, and the formulation also affects absorption. [48] [12] [50]
What are the side effects of CoQ10?
No serious side effects of CoQ10 have been reported, according to NCCIH. Mild effects include insomnia and digestive upset, and rash, nausea, dizziness, headache, heartburn and fatigue are also reported. [1] [8]
Can I take CoQ10 with warfarin?
Only with your doctor’s knowledge. The US National Cancer Institute says CoQ10 can reduce the response to warfarin and case reports describe this, although one small randomised trial found no change in INR or warfarin dose. [8] [51] [9]
Which foods are high in CoQ10?
Meat, fish, nuts and some oils are the richest sources. Average dietary intake is only about 3 to 6 mg a day, far below the amounts used in most trials. [10]
This article is for education and does not replace medical advice. Do not start, stop or change any medicine or supplement without medical guidance.
References
1. National Center for Complementary and Integrative Health, US National Institutes of Health. Coenzyme Q10. Last updated January 2019. nccih.nih.gov
2. Al Saadi T, et al. Coenzyme Q10 for heart failure. Cochrane Database Syst Rev 2021;(2)(2):CD008684. doi:10.1002/14651858.CD008684.pub3
3. Qu H, et al. Effects of Coenzyme Q10 on Statin-Induced Myopathy: An Updated Meta-Analysis of Randomized Controlled Trials. J Am Heart Assoc 2018;7(19):e009835. doi:10.1161/JAHA.118.009835
4. Kennedy C, et al. Effect of Coenzyme Q10 on statin-associated myalgia and adherence to statin therapy: A systematic review and meta-analysis. Atherosclerosis 2020;299:1-8. doi:10.1016/j.atherosclerosis.2020.03.006
5. Sazali S, et al. Coenzyme Q10 supplementation for prophylaxis in adult patients with migraine-a meta-analysis. BMJ Open 2021;11(1):e039358. doi:10.1136/bmjopen-2020-039358
6. Okoli GN, et al. Vitamins and Minerals for Migraine Prophylaxis: A Systematic Review and Meta-analysis. Can J Neurol Sci 2019;46(2):224-233. doi:10.1017/cjn.2018.394
7. Rosselló Aubach L, et al. Effects of Coenzyme Q10, Tryptophan, and Magnesium Supplementation on Fatigue in Patients with Fibromyalgia – A Randomized Trial. J Diet Suppl 2025;22(3):433-444. doi:10.1080/19390211.2025.2483269
8. National Cancer Institute, US National Institutes of Health. Coenzyme Q10 (PDQ, Health Professional Version). Updated 31 October 2024. cancer.gov
9. Engelsen J, et al. [Effect of Coenzyme Q10 and Ginkgo biloba on warfarin dosage in patients on long-term warfarin treatment. A randomized, double-blind, placebo-controlled cross-over trial]. Ugeskr Laeger 2003;165(18):1868-71. PubMed 12772396
10. Pravst I, et al. Coenzyme Q10 contents in foods and fortification strategies. Crit Rev Food Sci Nutr 2010;50(4):269-80. doi:10.1080/10408390902773037
11. Banach M, et al. Statin therapy and plasma coenzyme Q10 concentrations–A systematic review and meta-analysis of placebo-controlled trials. Pharmacol Res 2015;99:329-36. doi:10.1016/j.phrs.2015.07.008
12. Pravst I, et al. Comparative Bioavailability of Different Coenzyme Q10 Formulations in Healthy Elderly Individuals. Nutrients 2020;12(3). doi:10.3390/nu12030784
13. Cordero MD, et al. Is inflammation a mitochondrial dysfunction-dependent event in fibromyalgia? Antioxid Redox Signal 2013;18(7):800-7. doi:10.1089/ars.2012.4892
14. Dohlmann TL, et al. Statin Treatment Decreases Mitochondrial Respiration But Muscle Coenzyme Q10 Levels Are Unaltered: The LIFESTAT Study. J Clin Endocrinol Metab 2019;104(7):2501-2508. doi:10.1210/jc.2018-01185
15. Kovacic S, et al. Effects of coenzyme Q10 supplementation on myopathy in statin-treated patients: a systematic review and meta-analysis. J Nutr Sci 2025;14:e72. doi:10.1017/jns.2025.10043
16. Banach M, et al. Effects of coenzyme Q10 on statin-induced myopathy: a meta-analysis of randomized controlled trials. Mayo Clin Proc 2015;90(1):24-34. doi:10.1016/j.mayocp.2014.08.021
17. Wei H, et al. Effects of coenzyme Q10 supplementation on statin-induced myopathy: a meta-analysis of randomized controlled trials. Ir J Med Sci 2022;191(2):719-725. doi:10.1007/s11845-021-02651-x
18. National Institute for Health and Care Excellence (NICE). Cardiovascular disease: risk assessment and reduction, including lipid modification (NG238), recommendation 1.12.1. nice.org.uk/guidance/ng238
19. Taylor BA, et al. A randomized trial of coenzyme Q10 in patients with confirmed statin myopathy. Atherosclerosis 2015;238(2):329-35. doi:10.1016/j.atherosclerosis.2014.12.016
20. Parohan M, et al. Effect of coenzyme Q10 supplementation on clinical features of migraine: a systematic review and dose-response meta-analysis of randomized controlled trials. Nutr Neurosci 2020;23(11):868-875. doi:10.1080/1028415X.2019.1572940
21. Talandashti MK, et al. Effects of selected dietary supplements on migraine prophylaxis: A systematic review and dose-response meta-analysis of randomized controlled trials. Neurol Sci 2025;46(2):651-670. doi:10.1007/s10072-024-07794-0
22. Peng J, et al. Nutritional supplements for migraine prevention: evaluating evidence sufficiency and effect modifiers through network meta-analysis, trial sequential analysis, and meta-regression. Front Nutr 2026;13:1911863. doi:10.3389/fnut.2026.1911863
23. Zeng Z, et al. Efficacy of CoQ10 as supplementation for migraine: A meta-analysis. Acta Neurol Scand 2019;139(3):284-293. doi:10.1111/ane.13051
24. Pringsheim T, et al. Canadian Headache Society guideline for migraine prophylaxis. Can J Neurol Sci 2012;39(2 Suppl 2):S1-59. PubMed 22683887
25. Holland S, et al. Evidence-based guideline update: NSAIDs and other complementary treatments for episodic migraine prevention in adults: report of the Quality Standards Subcommittee of the American Academy of Neurology and the American Headache Society. Neurology 2012;78(17):1346-53. doi:10.1212/WNL.0b013e3182535d0c
26. American Academy of Neurology. Update: NSAIDs and Other Complementary Treatments for Episodic Migraine Prevention in Adults (guideline page, retired 16 September 2015). aan.com
27. National Institute for Health and Care Excellence (NICE). Headaches in over 12s: diagnosis and management (CG150). nice.org.uk/guidance/cg150
28. Slater SK, et al. A randomized, double-blinded, placebo-controlled, crossover, add-on study of CoEnzyme Q10 in the prevention of pediatric and adolescent migraine. Cephalalgia 2011;31(8):897-905. doi:10.1177/0333102411406755
29. Cordero MD, et al. Can coenzyme q10 improve clinical and molecular parameters in fibromyalgia? Antioxid Redox Signal 2013;19(12):1356-61. doi:10.1089/ars.2013.5260
30. Sawaddiruk P, et al. Coenzyme Q10 supplementation alleviates pain in pregabalin-treated fibromyalgia patients via reducing brain activity and mitochondrial dysfunction. Free Radic Res 2019;53(8):901-909. doi:10.1080/10715762.2019.1645955
31. Freire de Carvalho J, Skare T. Coenzyme Q10 supplementation in rheumatic diseases: A systematic review. Clin Nutr ESPEN 2024;59:63-69. doi:10.1016/j.clnesp.2023.11.016
32. Macfarlane GJ, et al. EULAR revised recommendations for the management of fibromyalgia. Ann Rheum Dis 2017;76(2):318-328. doi:10.1136/annrheumdis-2016-209724
33. Mortensen SA, et al. The effect of coenzyme Q10 on morbidity and mortality in chronic heart failure: results from Q-SYMBIO: a randomized double-blind trial. JACC Heart Fail 2014;2(6):641-9. doi:10.1016/j.jchf.2014.06.008
34. Xu J, et al. Efficacy and safety of coenzyme Q10 in heart failure: a meta-analysis of randomized controlled trials. BMC Cardiovasc Disord 2024;24(1):592. doi:10.1186/s12872-024-04232-z
35. Claxton L, et al. Coenzyme Q10 to manage chronic heart failure with a reduced ejection fraction: a systematic review and economic evaluation. Health Technol Assess 2022;26(4):1-128. doi:10.3310/KVOU6959
36. Hopper I, et al. Nutraceuticals in Patients With Heart Failure: A Systematic Review. J Card Fail 2020;26(2):166-179. doi:10.1016/j.cardfail.2019.10.014
37. Florou P, et al. Does coenzyme Q(10) supplementation improve fertility outcomes in women undergoing assisted reproductive technology procedures? A systematic review and meta-analysis of randomized-controlled trials. J Assist Reprod Genet 2020;37(10):2377-2387. doi:10.1007/s10815-020-01906-3
38. Pandey C, et al. The Role of Nutrient Supplements in Female Infertility: An Umbrella Review and Hierarchical Evidence Synthesis. Nutrients 2024;17(1). doi:10.3390/nu17010057
39. Schütz D, et al. Effect of micronutrients on fertility and aneuploidy rates in human conceptions: a systematic review and meta-analysis. Reprod Biomed Online 2026;52(2):105261. doi:10.1016/j.rbmo.2025.105261
40. Michaelsen MP, et al. The Effect of Dietary Supplements on Male Infertility in Terms of Pregnancy, Live Birth, and Sperm Parameters: A Systematic Review and Meta-Analysis. Nutrients 2025;17(10). doi:10.3390/nu17101710
41. Sharma AP, et al. Systematic Review and Meta-analysis on Effect of Carnitine, Coenzyme Q10 and Selenium on Pregnancy and Semen Parameters in Couples With Idiopathic Male Infertility. Urology 2022;161:4-11. doi:10.1016/j.urology.2021.10.041
42. Beal MF, et al. A randomized clinical trial of high-dosage coenzyme Q10 in early Parkinson disease: no evidence of benefit. JAMA Neurol 2014;71(5):543-52. doi:10.1001/jamaneurol.2014.131
43. Ho MJ, et al. Blood pressure lowering efficacy of coenzyme Q10 for primary hypertension. Cochrane Database Syst Rev 2016;3(3):CD007435. doi:10.1002/14651858.CD007435.pub3
44. Zhao D, et al. Dose-Response Effect of Coenzyme Q10 Supplementation on Blood Pressure among Patients with Cardiometabolic Disorders: A Grading of Recommendations Assessment, Development, and Evaluation (GRADE)-Assessed Systematic Review and Meta-Analysis of Randomized Controlled Trials. Adv Nutr 2022;13(6):2180-2194. doi:10.1093/advances/nmac100
45. Rezagholizadeh F, et al. The effect of CoQ10 supplementation on cardiovascular risk factors in patients with prediabetes and type 2 diabetes mellitus: a grade-assessed systematic review and dose-response meta-analysis. BMC Pharmacol Toxicol 2026;27(1). doi:10.1186/s40360-025-01002-1
46. Mehrabani S, et al. Effect of coenzyme Q10 supplementation on fatigue: A systematic review of interventional studies. Complement Ther Med 2019;43:181-187. doi:10.1016/j.ctim.2019.01.022
47. Magalhães PLM, et al. Effects of Coenzyme Q10 Supplementation on Depressive Symptoms and Fatigue: A Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Clin Psychopharmacol 2026;46(1):93-100. doi:10.1097/JCP.0000000000002112
48. Langsjoen PH, Langsjoen AM. Comparison study of plasma coenzyme Q10 levels in healthy subjects supplemented with ubiquinol versus ubiquinone. Clin Pharmacol Drug Dev 2014;3(1):13-7. doi:10.1002/cpdd.73
49. Zhang Y , et al. Ubiquinol is superior to ubiquinone to enhance Coenzyme Q10 status in older men. Food Funct 2018;9(11):5653-5659. doi:10.1039/c8fo00971f
50. López-Lluch G, et al. Bioavailability of coenzyme Q10 supplements depends on carrier lipids and solubilization. Nutrition 2019;57:133-140. doi:10.1016/j.nut.2018.05.020
51. Landbo C, Almdal TP. [Interaction between warfarin and coenzyme Q10]. Ugeskr Laeger 1998;160(22):3226-7. PubMed 9621803


