Product Tests Select a Review CL Answers  Warnings  Encyclopedia Where to Buy News

ConsumerLab.com Answers  

Question:
Can CoQ10 or ubiquinol be ruined by heat? I recently purchased several bottles of Qunol Plus from Costco.com and they arrived hot. The soft gels are not melted, but I am concerned.

Answer:
We generally advise against purchasing supplements by mail during very hot weather, as high temperatures can damage probiotics, vitamins, and phytochemicals found in herbs.

Ubiquinol is naturally produced in the body, so it can certainly withstand temperatures in the high 90s Fahrenheit. Exposure to higher temperatures will hasten degradation, but the process takes time. For example, an experiment with CoQ10 (a compound similar to ubiquinol) found a loss of only 15% after two months of being exposed to a temperature of 131 Fahrenheit. However, the addition of antioxidants, such as ascorbic acid (vitamin C), could minimize the loss to less than 5% (Kommuru, Chem Pharm Bull, 1999). Ubiquinol and CoQ10 products generally include antioxidant ingredients.

At a temperature of over 140 degrees, the gelatin in softgels can melt and this heat can also damage ubiquinol and CoQ10. If a break occurred in the softgel shell, exposure to air would speed degradation of the ingredient due to oxidation.

Since your softgels didn't melt and it is likely that the product may only have been exposed to high heat for a period of hours or days during transport, there was probably little degradation of the ubiquinol and it should be potent. To extend its shelf-life, store it at room temperature and away from light if it is in a clear bottle. 

For more information, including ConsumerLab.com's tests and comparisons of products, see the CoQ10 and Ubiquinol Supplements Review.

Also see these related CL Answers:

What is the difference between CoQ10 and ubiquinol? >>

Do vitamins, minerals and nutritional supplements lose effectiveness with exposure to high temperatures and is it safe to order supplements by mail in the summer? >>

I am curious why some probiotics do not require refrigeration even though they contain some of the same bacteria in probiotics that require refrigeration? Which probiotics need to be refrigerated? >>

Can heat and humidity destroy whey protein and other sports nutrition supplements (e.g., creatine, BCAAs, digestive enzymes) during shipping or while storing at home? >>

Which supplements are helpful to have when traveling? Any tips on how to best store supplements on trips? >> 

How do I choose the best CoQ10 supplement? >>

What is "nano" CoQ10? Is it better than other CoQ10 formulations? >>

Is it worth paying more for "pharmaceutical grade" CoQ10? What about "natural" or "live source" CoQ10? >>

Does taking natural versus synthetic CoQ10 make a difference? How do you know which product is natural or synthetic? >>

Is MitoQ a better form of CoQ10? >>

Is it safe to take CoQ10 while taking blood thinners like warfarin or Plavix (clopidogrel)? >>


See other recent and popular questions >>
COMMENTS


Share your thoughts and comments about this topic in the space below. Please abide by the following rules:
  • If you make a statement of fact, such as whether a type of treatment does or does not work, state your basis -- such as personal experience or a published study.
  • If you make a positive or negative comment about a product, note whether or not you have a financial interest in the product or in a competing product.
  • Please be respectful in your tone.
  • Please do not submit any type of HTML markup or scripting as it will not be accepted, nor will comments that exceed 2,500 characters.
Comment:

Share your thoughts and comments about this topic in the space below. Please abide by the following rules:
  • If you make a statement of fact, such as whether a type of treatment does or does not work, state your basis -- such as personal experience or a published study.
  • If you make a positive or negative comment about a product, note whether or not you have a financial interest in the product or in a competing product.
  • Please be respectful in your tone.
  • Please do not submit any type of HTML markup or scripting as it will not be accepted, nor will comments that exceed 2,500 characters.
Comment:

You can modify your comment below. Please be aware the comment will have to approve the changes before they will be shown:
Comment:

Your edit has been submitted and is being reviewed by ConsumerLab.com prior to publication.
This CL Answer initially posted on 8/2/2017.
ConsumerLab.com members may submit questions to CLAnswers@ConsumerLab.com. We read all questions and try to answer those of popular interest.

 
Popular Reviews
CoQ10 and Ubiquinol Supplements
CoQ10 and Ubiquinol Differ in Quality, Absorption & Cost
Turmeric and Curcumin Supplements and Spices
31% of Turmeric/Curcumin Products Fail CL's Tests
Green Tea Supplements and Drinks
Check the Strength and Purity of Green Tea Supplements, Teas, and Drinks


ConsumerLab.com Encyclopedia

In addition to our product reviews our encyclopedia covers the following:

Follow us on...

 
 
Join |  Sign In
   
Join Us on Facebook! Join Us on Instagram! Join Us on Twitter! Join Us on Google+! Join Us on YouTube! 
Product Tests
Brands Tested
Health Conditions
Encyclopedia
CL Answers
Clinical Updates
News
Recalls & Warnings
RDAs
Where to Buy Products
Raw Materials Tests
Testing Program
Join CL Today
Testimonials
Join Free Newsletter
Group Subscriptions
Gift Membership
About Us
The CL Seal
CL Survey
Privacy Policy
Sitemap
Contact Us/Help

©2018 ConsumerLab.com, LLC. All rights reserved. A single copy of a report may be printed for personal use by the subscriber. It is otherwise unlawful to print, download, store or distribute content from this site without permission.
ConsumerLab.com name and flask logo are both registered trademarks of ConsumerLab.com, LLC. This site is intended for informational purposes only and not to provide medical advice.