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Is CoQ10 Effective?

It's fairly clear that CoQ10 is not the universal cure-all or fountain of youth that it is sometimes claimed to be. However, research indicates that it seems to be effective for several different uses, although further research is necessary to confirm such findings (see Does CoQ10 Work?).

Dosing Information

Much more research is necessary before the safest and most effective dosage of CoQ10 can be determined. In addition, there is some speculation that different forms may be absorbed more easily than others.
(Click CoQ10 Dosage for more information.)

Side Effects of CoQ10

CoQ10 is usually tolerated quite well, although it can sometimes cause side effects, such as:
(Click CoQ10 Side Effects to learn more, including potentially serious side effects you should report immediately to your healthcare provider.)

Drug Interactions

CoQ10 can potentially interact with a few different medications (see CoQ10 Drug Interactions).

Safety Issues With CoQ10

Reasonable doses are probably safe for most people, especially if high-quality supplements are used, because these supplements are less likely to be contaminated or have other problems. Some people are more likely than others to experience problems. Therefore, you should talk with your healthcare provider prior to taking CoQ10 if you have:
Also, let your healthcare provider know if you are:
Make sure to tell your healthcare provider about any medications you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Is CoQ10 Safe? for more information, including any available warnings and precautions.)
Written by/reviewed by:
Last reviewed by: Kristi Monson, PharmD;
Last updated/reviewed:
List of references (click here):
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