Co q 10 Side Effects: Things you should know

Co q 10 is short name for coenzyme Q10. This substance is produce by the body but there are people who do not produce enough because of certain medical conditions. In cases like this, a supplement is required in order to increase coenzyme. Co q 10 is categorized as dietary supplements and not medications. Being a dietary supplement means, it is less restricted and requires more studies to show its benefits and long-term side effects. Here are co q 10 side effects which people should be aware.

  • Itching
  • Wheezing
  • Rashes
  • Nausea
  • Diarrhea
  • Fainting or dizziness
  • Low blood pressure
  • Loss of appetite
  • Increased liver enzymes
  • Difficulty in breathing

The side effects are due to contaminants that are present in the low quality co q 10 that may trigger reactions to patients.

Aside from the co q 10 side effects, it may also result to drug interactions to other medicines. Refrain from drinking co q 10, if you are drinking blood pressure medication and chemotherapy drugs.

Co q 10 supplements will interact with your blood pressure medications, which may result to dizziness and feeling of light-headedness. Ask your doctor and healthcare provider if it is safe for your condition to take co q 10 supplements.

Co q 10 may also react with chemotherapy medicines. The chemotherapy medicines may likely to be less effective when a patient takes co q 10.

Call also your doctor’s attention if you also have present conditions like hypotension and allergies. Because low blood pressure may even plunge down if, you take co q 10. For allergies, your symptoms of itchiness and rashes may worsen when you take co q 10.


There are some instances that co q 10 is taken with a lower dosage, to avoid the side effects but it is not clearly shown if decreasing the dosage actually lessen the side effects.


In addition, if you are pregnant or trying to be pregnant, do not just drink co q 10. There are no clinical studies, which show safety of co q 10 for infants. So ask your doctor first if it is safe for you and your unborn child. Likewise, tell your doctor if you are breastfeeding to avoid any risk of co q 10 to your child.


Like any other supplements, ask your first doctor if you really need to take them, as not all supplements may be good for the body especially if you are taking it with other medications. If you really plan to take it, ask your doctor the complete instructions like dosage and how many days you should take the medicine.


When you obtain the prescription, buy only from reputable pharmacy. Buy only products that are manufactured by reliable pharmaceutical companies to lessen the possibility of severe co q 10 side effects.


At present, co q 10 is generally good supplements for those who have certain medical conditions but not all those suffering from chronic ailments can actually benefit from co q 10. Your doctor will decide for you if the benefits will outweigh the side effects.

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