Our Members Asked:
Could my CoQ10 supplement be making me nauseous?
Medically reviewed and edited by Tod Cooperman, M.D.
Answer:Yes. Although CoQ10 is generally well-tolerated, it can cause gastrointestinal symptoms such as nausea and diarrhea in a small percentage of people. Ways to minimize these effects, and information about other potential side-effects, are found in the CoQ10 and Ubiquinol Supplements Review.
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Related CL Answers (15)
I recently bought a CoQ10 supplement on Amazon. The manufacture date was hidden under a sticker, but was 13 months ago. No "Best By" date is listed. Is this product still good to use?
Find out how long your CoQ10 supplement should last, if your CoQ10 is expired, and how long it is good to use. ConsumerLab.com's answer explains.
Can I take CoQ10 at the same time as my statin, or should I take them separately?
Taking CoQ10 and statins (such as lovastatin and simvastatin)? Find out if you can take them at the same time or if they should be taken separately. ConsumerLab.com's answer explains.
What are CoQ10 side effects?
CoQ10 side effects, such as nausea, headache, and insomnia, and how you can reduce the occurrence of CoQ10 side effects. ConsumerLab.com's answer explains.
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.
Find out whether your CoQ10 or ubiquinol supplement can be destroyed by heat during shipping and at what temperature CoQ10 softgels can melt. ConsumerLab.com's answer explains.
Do CoQ10 levels really decrease with age?
Find out if CoQ10 levels decrease with age in the blood, brain & heart and at what age these decreases begin.
Are CoQ10 and ubiquinol safe to take for a long period of time? Should I give it a rest period?
CoQ10 and ubiquinol supplements safety tips - including dosage, side effects, drug interactions and prolonged usage.
Which supplements make acid reflux worse? I take many and think some are causing heartburn. Are there any supplements that help treat acid reflux?
Find out which supplements can cause or worsen acid reflux, nausea and GERD, including vitamin B6, arginine, and CoQ10.
Which supplements can help with indigestion and/or heartburn?
Information on supplements for heartburn that can help relieve gastrointestinal symptoms - heartburn, indigestion and acid reflux.
Is it safe to take CoQ10 while taking blood thinners like warfarin or Plavix (clopidogrel)?
Learn more about the possible counteractive effects of CoQ10 and blood thinners, including safety.
Is MitoQ a better form of CoQ10?
MitoQ information, including how it is absorbed in the body and how it compares to CoQ10.
Could my CoQ10 supplement be causing my insomnia?
Learn more about the impact on sleep that supplements such as CoQ10, St. John's wort, and DHEA may have. Insomnia may be caused by certain supplements.
Do I need to divide my daily 300 mg dose of CoQ10 into smaller doses, or can I take it all at once?
Find out when to take CoQ10 supplements. Should you take CoQ10 at once, or in smaller doses? Understand the best way. ConsumerLab.com explains.
What is PQQ? Does it help with aging and memory? Is it similar to CoQ10?
PQQ information (pyrroloquinoline quinone), including evidence from studies on fatigue & tiredness, mood, memory, cognition, and inflammation.
How do I choose the best CoQ10 supplement?
Looking to choose the best CoQ10 brand supplement? Understand which CoQ10 you are buying, differences in dose, absorption, quality and more. ConsumerLab explores this topic.
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