Reviewed by Dietitian Mandy Enright, M.S., RDN, RYT
Credit: Abbey Littlejohn
Key Points
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Coenzyme Q10 is naturally produced by the body and is also found in certain foods and supplements.
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CoQ10 may enhance energy levels, reduce cellular damage, and potentially improve heart health.
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It is generally safe for most individuals, except those who are pregnant, breastfeeding, or using specific medications.
Coenzyme Q10, commonly known as CoQ10, is a vital substance present in every organ of the body. Besides being found in various foods, it’s also available as a dietary supplement. Many claims surround CoQ10, including its potential to boost energy, support cellular health, promote heart function, enhance physical performance, and even prevent migraines. As natural levels of CoQ10 decline with age, it has gained popularity as a longevity supplement.
Below, you’ll find essential information regarding the health benefits, potential side effects, and precautions related to CoQ10.
Potential Health Benefits
It May Increase Energy
CoQ10 is crucial for energy production, assisting in the creation of adenosine triphosphate (ATP), the main energy currency of our cells. According to Ayla Barmmer, M.S., RD, LDN, studies have shown promising results regarding CoQ10 supplementation and energy levels. One meta-analysis that reviewed 13 studies indicated that individuals taking CoQ10 experienced significantly less fatigue in comparison to those receiving a placebo.
It May Reduce Cell Damage
CoQ10 aids in maintaining cellular health through various mechanisms. Notably, it functions as an antioxidant. “Antioxidants stabilize free radicals in multiple ways, including providing extra electrons to frantic free radical molecules,” explains Barmmer.
In addition, “CoQ10 also acts as a free radical scavenger, protecting cells from damage and reducing inflammation,” adds Amy Brownstein, M.S., RDN.
“CoQ10 helps shield cells from injury while minimizing inflammation.”
— Amy Brownstein, M.S., RDN
It Might Improve Heart Health
As heart disease remains the leading cause of death in the United States, it is no wonder that many supplements focus on heart health. “CoQ10 is vital for cardiac function because the heart demands extensive energy to effectively pump blood,” states Barmmer. “By enhancing energy production and managing oxidative stress, CoQ10 may support a healthy heart.”
While the theoretical benefits sound promising, the National Institutes of Health notes that existing research on CoQ10’s role in preventing heart disease is minimal and inconclusive. A systematic review of 11 studies revealed no definitive evidence supporting its protective effects against heart failure.
However, there is some indication that taking CoQ10—at dosages ranging from 100 mg to 200 mg daily—could help prevent high blood pressure, a known risk factor for heart disease, thereby potentially contributing to CoQ10’s overall heart-related benefits.
The NIH also suggests that CoQ10 may offer protective effects during heart surgery recovery.
Recommended Dosage
There is no one-size-fits-all dosage for CoQ10; however, many studies use doses between 100 and 200 milligrams. “Supplements are sold in various dosages, often ranging from 30 to 600 milligrams,” explains Barmmer. “It is advisable to adhere to your healthcare provider’s guidance for personalized recommendations.”
Potential Side Effects and Precautions
Like any supplement or medication, CoQ10 may cause side effects. Older studies indicate that doses of up to 900 milligrams per day were as well-tolerated as a placebo. Though side effects can occur, they are typically mild. “Some individuals may experience digestive issues, dizziness, insomnia, headaches, or skin rashes when taking CoQ10,” notes Vanessa Imus, M.S., RDN. Insomnia has also been frequently reported.
Despite its relative safety, CoQ10 may not be suitable during pregnancy or while breastfeeding. “Due to the limited research on its safety during pregnancy, it is generally advised to stop taking it once pregnancy is confirmed,” Barmmer suggests.
Additionally, interactions with medications can occur when taking CoQ10. “Those managing diabetes or on blood pressure-lowering medications should exercise caution, as CoQ10 may lower blood sugar and blood pressure,” warns Imus.
Other drugs, such as blood thinners and chemotherapy agents, may also interact negatively with CoQ10 supplements. It’s crucial to consult a healthcare provider before starting CoQ10 to review all medications and supplements you are currently taking.
Our Expert Take
As we age, our natural production of CoQ10 diminishes, prompting many to consider supplementation to regain vitality. However, research is still developing in this area. The most compelling evidence supports its ability to elevate energy levels and diminish cellular damage. There may also be benefits in lowering blood pressure and aiding recovery from heart surgery, but further research is needed. Overall, CoQ10 tends to have mild side effects and is safe for most individuals, excluding those who are pregnant or breastfeeding. It may also interact with certain medications, particularly blood thinners and chemotherapy drugs, as well as pose risks for those on diabetes or blood pressure medications. Therefore, it’s advisable to consult with a healthcare professional before incorporating CoQ10 into your routine to ensure it’s safe for you.
Frequently Asked Questions
What are the benefits of taking CoQ10?
CoQ10 is a potent antioxidant that helps reduce oxidative stress and protect against cellular damage. Research suggests that CoQ10 supplementation may enhance energy, safeguard cells, and potentially contribute to heart health.
Is it safe to take CoQ10 every day?
Yes, daily intake of CoQ10 has been shown to be safe for most healthy adults. However, its safety during pregnancy and breastfeeding remains uncertain due to a lack of research.
What is coenzyme Q10 used for?
CoQ10 is a supplement that may help enhance energy levels and support cellular and cardiovascular health. As natural levels of CoQ10 decrease with age, it has become a popular choice for those seeking longevity. People also use it to improve physical performance, mitigate migraines, and alleviate muscle pain associated with cholesterol-lowering medications, although research on its effectiveness in these areas is not conclusive.
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