heart failure, high blood pressure, periodontal disease, Parkinson's disease, certain muscular diseases, and AIDS, might have lower levels of coenzyme Q-10.
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diarrhea. It can cause allergic skin rashes in some people. It also might lower blood pressure, so check your blood pressure carefully if you have very low blood pressure. Dividing the total daily dose by taking smaller amounts two or three times a day instead of a large amount all at once can help reduce side effects.
Coenzyme Q-10 also seems to be safe for most children. But coenzyme Q-10 should not be used in children without medical supervision.
Do not use coenzyme Q-10 if:
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.