Coenzyme Q10 is an important chemical substance found in the cell membrane of almost every cell in the body and plays a critical role in numerous biological processes. No serious side effects have been linked to coenzyme Q10; it is considered safe and well-tolerated. However, in some cases, side effects may result. As with any health supplement, you should consult your doctor before taking coenzyme Q10.
Mental Effects
Coenzyme Q10 can possibly cause headache, irritability and dizziness. In some cases, coenzyme Q10 can induce an increased sensitivity to light, a condition known as photophobia. Insomnia, or difficulty falling asleep, may also occur.
Gastrointestinal Effects
Nausea and upset stomach may occur after taking coenzyme Q10. In some cases, vomiting may also result. Some people may have a decrease in appetite. Diarrhea is another possible side effect, which may be accompanied by pain or discomfort in the abdomen, particularly the upper abdomen. Heartburn can also occur.
Allergic Reaction
In rare cases, coenzyme Q10 can cause a severe allergic reaction. Symptoms of an allergic reaction include wheezing, coughing, tightness in the chest and difficulty breathing. Swelling, especially in the face, mouth, tongue and lips may occur. An allergic reaction may also cause itchy skin, a rash or hives. If you experience these symptoms after taking coenzyme Q10, you should call a doctor immediately.
Drug Interactions
Coenzyme Q10 supplements can possibly cause interactions with other medications -- such as medications taken for high blood pressure. Coenzyme Q10 may increase the effectiveness of blood pressure-lowering medications, possibly lowering blood pressure to dangerous levels. Coenzyme Q10 may counter-act the blood-thinning medication warfarin because coenzyme Q10 tends in increase blood clotting. In some cases, coenzyme Q10 supplements may decrease the amount of insulin needed by diabetic patients. Coenzyme Q10 may also decrease the effectiveness of certain anti-cancer drugs.
Member Comments