Updated: 07/18/2017

Coenzyme Q10 Review- Does This Antioxidant Work?

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  • Rating: 1.0. From 1 vote.
By Summer Banks Jul 25, 2017

Why is it that so few diet supplements actually work? Let’s find out if Coenzyme Q10 is one of the good ones. We found information on the ingredient, possible side effects and research. We also chose to read hundreds of reviews and testimonials from people who’ve tried it. Then, we refined to give you the bottom line.

Coenzyme Q10 Readers: Click here to find out why we're giving away samples of our product, Dietspotlight Burn.

What is Coenzyme Q10?

To start off with, Coenzyme Q10 is a pseudo vitamin and antioxidant commonly used to support heart health. Despite this main function, there are dieters who feel it can help them lose weight. You take it one or twice daily, in most cases.

There are a multitude of companies that sell Coenzyme Q10. Each claims the version they’re selling is the best to support heart health, however research tends to be completed on non-branded types. You can buy online from a long list of retailers, but there’s no official website for the ingredient. We like the clinical support it has and some users appreciate the results, but read on…

Increase in Energy – “Not Really”

Firstly, some users expected Coenzyme Q10 to boost energy, but they didn’t notice that effect. “If you take a supplement with one outcome in mind and that doesn’t happen, you are inevitably going to be let down,” explains our Research Editor.

“Not helping with my energy level,” said a customer.

“Instead of giving me a burst of energy and sense of well-being, I felt very strange and weak. Not my cup of tea I guess,” offered another user.

Just as many did notice a spike in energy after starting Coenzyme Q10.

One said, “This product has definitely increased my energy level. I have been able to exercise longer and as a result have lost weight.”

Another put it like this, “When she went to 3 pills per day, she felt more energized.”

Side Effects of Coenzyme Q10 – “Harmful or Mild?”

Quite a few Coenzyme Q10 side effects were reported by users. None appeared to be harmful – just irritating.

“This product gave me stomach queasiness and mild heartburn,” offered one dieter.

A customer said, “I started getting headaches and having stomach issues – upset stomach, cramping, etc.”

There are some positives out there from people who saw no such results.

“I have not had any side effects such as, headaches, dizziness, nausea, vision issues etc.,” was one experience.

Yet another shared, “I have noticed any side effects, nothing that I can tell or may have noticed at all so I guess that is good.”

We’ve noticed it takes something that seems quite small, like a headache, to ruin that chance of results you’re looking for. If Coenzyme Q10 side effects are irritating enough, it will pass from one dieter to the next as a warning of sorts.

The Science – “Does Clinical Proof Exist?”

Coenzyme Q10 is sold as a supportive supplement for heart health. This is a sensitive category. This antioxidant will NOT replace any medications prescribed by your doctor. With that said, some research suggests it may help in patients with heart failure as a low level is sometimes associated with the condition. There’s also some vague support for use with macular degeneration and aging. We also found a bit of information on using it for the treatment of obesity as a higher BMI is associated with lower levels of CoQ10.

The Bottom Line – Does Coenzyme Q10 Work?

Are we heading out to the vitamin store right now? Well, we like the idea of adding Coenzyme Q10 to your supplement regime to support overall heart health. And, there is at least a small connection with weight-loss if you are obese. However, we are hesitant to give the green light as the proof is not as strong as it is with other, all-natural ingredients.

If you’re ready to lose weight and you want to try out a supplement, our suggestion is to go with one that’s directly connected to weight-loss via clinical testing, unlike Coenzyme Q10.

Among the best products we’ve seen this year is one called Dietspotlight . The label shows just four ingredients and all have been scientifically tested and shown to help spark metabolism. We found dieters all over the world reporting amazing results and side effects, of any kind, are few and far between.

Plus, you can try out Dietspotlight Burn as part of a Special Trial Offer because the makers are confident in the formula.

Previous Coenzyme Q10 Review (Updated November 13, 2012):

Conenzyme Q10 - What You Should Know

Coenzyme Q10 is a co-enzyme the body needs to function correctly. The body produces it on its own to play a role in many processes. As we age though, our bodies stop making enough CoQ 10 to operate at the best levels. This is why many people look to supplementation to ensure they are getting what they need. We will take a closer look at the coenzyme to help you determine if it is something you should be using to promote more weight loss.

List of Ingredients

Coenzyme Q10 is the ingredient. It is used in a variety of supplements, so we advise you to take a closer look at the supplement you are most interested in to ensure it has what you are looking for.

Product Features

A coenzyme works with an enzyme in the body to help it perform certain functions. It is basically a protein that works to increase the rate chemical reactions take place in the body. CoQ10 works to provide energy for cell growth and reproduction, and behaves like an anti-oxdiant to reduce free radicals in the body. Free radicals lead to many conditions in the body, including cancer. This is why CoQ10 may be an effective cancer treatment.

Coenzyme Q10 - Advantages

  • Coenzyme Q10 helps keep the body healthy.
  • CoQ10 is available in several supplement forms.

Coenzyme Q10 - Disadvantages

  • Coenzyme Q10 has nothing to do with either appetite suppression or thermogenics.
  • Though no serious side effects have been reported, some may experience: insomnia, abdominal pain, and nausea.
  • Those who take insulin and some blood clotting drugs should speak to a doctor before taking this supplement, as it may interfere with the way the body responds to it.
  • Many healthy people who follow a balanced diet will not need to supplement with this as their body will produce enough of the chemical on its own.
  • Depending on the supplement manufacturer, there may or may not be a money back guarantee available.
  • There are likely no free trials of this supplement available.


Coenzyme Q10 is beneficial to the body in helping it stay healthy and fight free radical damage, but it does not play a direct role in the loss of fat or the suppression of appetite. Most people will produce enough of the protein on its own, and therefore will not require supplementation. If you think CooQ10 will be something good for you, speak to your doctor to be sure it will not interact with any medications you may be taking. Otherwise, look for a weight loss supplement that contains proven ingredients in the right amounts to suppress the appetite or burn fat, and use it with a balanced diet and regular exercise.

Learn More About Dietspotlight Burn »
Summer Banks Dietspotlight Author
About the Author:

Summer Banks, a content strategist at Dietspotlight, has researched over 5000 products in the past 10 years. She has years of nursing training, experience as a manager responsible for 15 supplement brands, and completed coursework on Food and Nutrition from Stanford University. full bio.

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Coenzyme Q10 Review

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Leave a comment or review

  Coenzyme Q10 for the heart
David Lofton

How does this product interact with Cholestol, high blood pressure and heart medications?

Maribel (Editor)

Hi David! Because of possible interactions with medications, please make sure to consult with your physician before taking this product.