How many milligrams should you take of CoQ10?

What is CoQ10?

CoQ10, also known as coenzyme Q10 or ubiquinone, is an antioxidant that occurs naturally within the body. It plays a vital role in energy production and protects cells from damage. CoQ10 levels start to decline once we hit our 20s, so supplementation is often recommended to boost levels. But how much should you take to achieve health benefits?

CoQ10 is found in almost every cell of the body, with high concentrations in organs like the heart, kidneys, liver and pancreas. It assists with energy production by helping convert the food we eat into ATP (adenosine triphosphate) – the energy source for all cells. Without adequate levels of CoQ10, our bodies struggle to produce energy efficiently.

In addition to energy production, CoQ10 also acts as a powerful antioxidant within cell membranes and lipoproteins (like LDL cholesterol). As an antioxidant, it helps protect cells from oxidative damage and inflammation. It also helps regenerate other antioxidants like vitamin E.

Supplementing with CoQ10 may provide several potential benefits:

  • Improved heart health and function
  • Lower blood pressure
  • Better blood sugar regulation
  • Reduced muscle pain from statin medications
  • Slowed progression of neurodegenerative diseases like Parkinson’s
  • Enhanced athletic performance
  • Improved fertility in men
  • Faster recovery from exercise
  • Anti-aging effects like smoother skin

Research shows that CoQ10 levels can decline with age, making supplementation more important. Certain medications like statins can also deplete CoQ10 status.

How much CoQ10 should you take?

When it comes to CoQ10 dosage for specific health conditions, research provides some general guidance:

Heart disease

For the treatment of heart disease, daily doses of 100-300mg have been used safely for up to one year. Doses up to 600mg per day have also been studied for short-term use. To maintain heart health, typical doses range from 50-100mg per day.

High blood pressure

Doses from 50-100mg per day have been found to help reduce blood pressure. Maximum effects may be seen around 3 months of continued use.

High cholesterol

To help lower LDL (bad) cholesterol, daily doses of 50-100mg have been used. Maximum effects may occur after about 4-12 weeks. Higher doses provide no additional benefit.


For adults with diabetes, CoQ10 doses of 100mg per day have been used safely. This appears effective for improving blood sugar control and cholesterol profiles, especially when paired with regular exercise.

Parkinson’s disease

In Parkinson’s patients, doses up to 1200mg per day improved symptoms after about 4 weeks of use in research studies. Normal doses for neuroprotection range from 300-600mg.

Athletic performance

For improved power output and stamina, studies have used dosages from 100-150mg per day. This appears most effective in athletes doing intense exercise exceeding 90 minutes.


CoQ10 doses of 200-300mg per day have been used to improve sperm count, motility and function in men. It may enhance fertility in combination with other antioxidants like vitamin E.

Skin health

Topical use of CoQ10 appears to reduce wrinkles, dryness and damage. Doses around 0.3% concentration in creams seem effective. It’s also added to various oral supplements meant for skin and hair health.

So in summary, dosages between 50-300mg per day have been found to provide a range of benefits. Dosages on the lower end like 50-100mg are suitable for general health, heart disease prevention, blood pressure support and cholesterol management. Higher doses up to 300mg are often used for diseases like Parkinson’s, diabetes and infertility.

The benefits are usually observed within 2-3 months, with maximum effects seen around 4-12 weeks. Higher doses above 300mg have not been found to provide additional advantages.

Are there side effects?

CoQ10 is considered very safe, even at higher doses. Very few side effects have been reported over many years of research and use.

Potential side effects can include:

  • Upset stomach or nausea
  • Diarrhea
  • Skin rash
  • Headache
  • Dizziness
  • Insomnia

These effects are usually mild at normal doses and often go away with continued use. Rates of stomach upset and nausea are around 1-3% in studies.

There is some evidence very high doses above 900-1000mg per day could potentially lower blood sugar levels too much in diabetes. Doses above 300mg should be monitored by a doctor when used long-term.

CoQ10 supplements appear to be safe for long-term daily use in adults when taken as recommended. There are no known serious adverse effects or reports of toxicity.

It’s also been used safely in children, though normal CoQ10 production is at its peak in childhood. Recommended pediatric doses range from 10-30mg per day, depending on age and use.

As with any supplement, it’s best to consult your doctor before using CoQ10 if you take any medications or have underlying health conditions. People on blood thinners and those getting ready for surgery should use caution.

Dosage timing

CoQ10 is best absorbed with a meal containing fat or oils. It’s recommended to take your daily dose during or just after your largest meal.

Some evidence suggests taking CoQ10 twice per day (rather than once) can boost absorption rates and maximize blood levels. For example, you could take half the dose at breakfast and half at dinner. Twice daily dosing may be the best approach for conditions like heart disease.

For skin health, it may be advised to take supplements twice per day, while also applying CoQ10 creams topically. Using CoQ10 before bed may help minimize facial wrinkles and damage from the day.

If you take CoQ10 just for general health or exercise performance, timing is less important. Taking it at any point during the day with food should provide benefit.

Choosing a CoQ10 supplement

CoQ10 comes in two main forms – ubiquinone and ubiquinol. Ubiquinol is the reduced, active antioxidant form, while ubiquinone is the oxidized form that your body can convert as needed.

Both ubiquinone and ubiquinol supplements have shown benefits in studies. However, ubiquinol may provide better absorption, especially as we age. Given the choice, ubiquinol supplements are usually recommended.

Common daily CoQ10 supplement doses include:

  • 50mg
  • 100mg
  • 200mg
  • 300mg

Look for CoQ10 in softgel capsule form for optimal absorption, preferably taken with a fat source. Avoid buying powder or tablet forms. Time-release capsules are also available.

In the US, typical CoQ10 prices range from around $25 to $100 for a one month supply, depending on the dose. High quality ubiquinol forms are more expensive than ubiquinone.

Some multi-vitamins may also provide small amounts like 10-30mg per serving. While beneficial, this may not be enough to provide desired benefits.

Buying CoQ10 from a reputable manufacturer is advised. Products should be tested for proper potency, purity and absorption.

Natural dietary sources

While our bodies make some CoQ10, we only get small amounts from food. Good dietary sources include:

  • Organ meats like heart, liver and kidneys
  • Fatty fish like salmon, tuna, sardines and mackerel
  • Meats like beef, pork and chicken
  • Nuts and seeds like pistachios, peanuts and sesame seeds
  • Vegetable oils like soybean and canola oil
  • Spinach and cauliflower
  • Legumes like soybeans, lentils and peanuts
  • Whole grains

However, the amount of CoQ10 in these foods is typically small – estimated around 3-5mg per serving. To obtain therapeutic dosages, supplementation is likely needed.

Cooking also depletes some natural CoQ10 levels. The highest levels are found in raw or gently cooked foods. Still, achieving 50-100mg purely from raw food intake may be unrealistic for most people.

Who may benefit from CoQ10?

Based on a review of the evidence, these groups stand to benefit most from CoQ10 supplementation:

  • Middle-aged or older adults – CoQ10 levels naturally drop after age 20, so those over 40 may benefit from more intake.
  • People with heart disease – Those with congestive heart failure, angina or a history of heart attack can often improve symptoms with daily CoQ10.
  • High blood pressure patients – Many studies show CoQ10 (from 50-100mg daily) can lower blood pressure.
  • Those on statins – Statins like atorvastatin deplete CoQ10 status, so supplementation helps offset this.
  • Diabetes patients – Better blood sugar control and cholesterol levels may be achieved with 100-200mg per day.
  • People with neurodegenerative diseases – CoQ10 appears to slow Parkinson’s progression at doses up to 1200mg per day.
  • Endurance athletes – Consuming 100-300mg per day can boost power output and aerobic capacity.
  • Infertile men – Sperm health and fertility rates improve with CoQ10 intake up to 300mg per day.

Those taking certain medications may also want to supplement, including statins, beta-blockers, and psychotropic drugs. Otherwise healthy adults may benefit from general doses of 50-100mg per day.

Can you take too much CoQ10?

Doses up to 900mg per day have been safely used in long-term studies for up to a year. Single doses up to 3000mg have also been tolerated. So toxicity is very unlikely when staying under 900mg per day.

The upper limit for adults is considered 1200mg per day. Higher intakes may interfere with blood sugar regulation or increase risk of bleeding when combined with medications like warfarin.

There have been almost no reports of serious adverse effects, even at very high doses. However, most benefits seem to plateau around 300mg per day, with no need to take mega-doses.

Factors that may increase sensitivity and risk of side effects include:

  • Older age – absorption decreases gradually after 50.
  • Use of blood thinner medications
  • history of bleeding disorders
  • Kidney problems – impaired excretion of CoQ10.
  • liver problems – difficulty processing lipids.

To avoid potential issues, doses over 300mg per day should only be taken under medical supervision. Anyone on medication should consult their physician prior to supplementing high amounts.

Is CoQ10 safe long-term?

Research suggests CoQ10 is safe for long-term daily use when taken as directed. Studies have monitored its effects for up to a year with no significant side effects.

While generally considered very safe, there are a few considerations:

  • It may increase bleeding risk at very high doses, so those on blood thinners should use caution.
  • It could potentially interact with chemotherapy drugs, so cancer patients should consult doctors.
  • Babies should not be given CoQ10, except under medical direction.
  • If side effects like insomnia or headaches occur, lower the dose or split intake.
  • Tell your doctor if taking higher doses over 300mg per day.

Provided doses are within recommendations, CoQ10 does not seem to cause harm or toxicity even with years of continued use. It may be beneficial as both a short and long-term supplement.

Should you take CoQ10?

CoQ10 is an important nutrient all cells utilize to make energy and minimize oxidative damage. It plays a role in overall health.

Clinical research indicates proper CoQ10 supplementation can provide benefits for:

  • Heart function and blood pressure
  • Parkinson’s disease
  • Diabetes and cholesterol
  • Infertility and sperm health
  • Athletic performance
  • Healthy aging
  • Skin rejuvenation

Doses in the 50-300mg range seem most beneficial for adults, taken daily with food. Those over 40 may gain the most effects due to declining CoQ10 levels.

Supplements appear very safe for long-term use. However, specific dosage recommendations depend on your health status and reasons for using it.

Talk to your doctor if you take any medications or have surgery planned to discuss whether CoQ10 is right for you. Overall, maintaining sufficient CoQ10 intake seems to provide anti-aging and disease-preventing benefits.


CoQ10 is a vital nutrient that supports cellular energy production and protects against oxidative stress. It’s produced naturally in the body, but levels start to drop around age 20.

Supplements can restore CoQ10 status and provide benefits. Doses between 50-300mg per day seem effective, taken with food for optimal absorption. Those with heart disease, diabetes, neurodegenerative disorders, infertility and athletes tend to benefit the most.

CoQ10 is considered very safe with minimal side effects, even for long-term use. However, some medication interactions are possible. It’s best to discuss supplementation with your doctor, especially at high doses over 300mg per day.

In summary, CoQ10 is an anti-aging antioxidant that plays a role in overall wellness. Taking a properly dosed supplement may support heart health, blood sugar regulation, brain function, exercise performance and fertility.

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