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The use of coenzyme Q10 has been known to lower blood pressure and lessen the effect of other drugs, including those that treat chemotheraphy, according to WebMD. CoQ10 supplements should not be used during pregnancy, wh... More »

www.reference.com Health Medications & Vitamins Side Effects

Side effects of CoQ10 include dizziness, fainting, diarrhea and trembling. Other side effects include fungal skin infection, back pain, sore throat and stomach pain. Some people may experience sinus inflammation, runny n... More »

www.reference.com Health Medications & Vitamins Side Effects

Side effects of CoQ10 are generally mild and include loss of appetite, stomach upset, diarrhea, nausea and vomiting, according to WebMD. The substance may also cause an allergic skin rash in some individuals, and it may ... More »

www.reference.com Health Medications & Vitamins Side Effects
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Some common side effects of coenzyme Q-10 are nausea, vomiting, diarrhea, skin rashes and lowered blood pressure, according to WebMD. These side effects are usually mild. Patients with very low blood pressure need to mon... More »

www.reference.com Health Medications & Vitamins Side Effects

Mega is a brand of coenzyme Q10, and possible side effects include mild insomnia, nausea, rashes, dizziness and upper abdominal pain, according to WebMD. Other potential side effects are headache, fatigue, irritability a... More »

www.reference.com Health Medications & Vitamins

Common side effects of using coenzyme Q-10 include nausea, vomiting, diarrhea, appetite loss and upset stomach, according to WebMD. Some patients experience reduced blood pressure and allergic skin rashes. To minimize si... More »

www.reference.com Health Medications & Vitamins Side Effects

Eye twitch is not a potential side effect of taking coenzyme Q-10, according to Mayo Clinic. CoQ10 is sold as a nutritional supplement and is considered "likely safe" by experts at WedMD. More »

www.reference.com Health Medications & Vitamins Side Effects