Coenzyme Q10, also called CoQ10, may sound like a foreign substance, but your body naturally creates it every day. It's a chemical produced by the body to maintain the functioning of your cells. Some chronic conditions can cause your CoQ10 levels to decrease, requiring a daily supplement to maintain healthy levels. Common conditions that may cause CoQ10 deficiency include heart disease, cancer, HIV/AIDS and muscular dystrophy. You should not use CoQ10 supplements without first talking to your physician.
About CoQ10
CoQ10 is commonly used to boost energy, strengthen the immune system and reacts in the body the same way as an antioxidant, according to the University of Maryland Medical Center. The supplement helps to fight against free radicals, compounds that can cause sickness and disease. The supplement may interact with certain medications. Discuss the use of any medication with your doctor or pharmacists before use. The recommended dose for an adult is 50 to 1,200 mg daily, depending on your doctor's recommendation. Do not exceed the recommended dose for your condition.
Common Side Effects
As with any supplement or medication, certain side effects may occur after you take the supplement. Stomach pain is a common side effect while taking CoQ10 supplements, along with other gastrointestinal symptoms, such as vomiting, nausea, upset stomach, heartburn, loss of appetite and diarrhea. Report adverse reactions to your doctor immediately. In rare cases, some symptoms may be a sign of a severe allergic reaction, which could lead to death. Eating food when you take the supplement may reduce stomach pain and other stomach problems.
Allergic Reaction
If you develop stomach pain along with other symptoms you may have an allergy to the supplement. The American Academy of Allergy, Asthma and Immunology states that when you ingest a new substance, the immune system may mistake it as a harmful threat to the body. If this occurs, your immune system releases immunoglobulin E antibodies to fight against the CoQ10. This action triggers a chemical chain reaction that can cause inflammation in your digestive system, respiratory system, cardiovascular system and skin.
Warning Signs
If your stomach pain is severe so that you cannot sit down or find comfort, call your doctor. Blood in your stool or your vomit along with stomach pain may be a sign of a serious medical condition. A puffy face, the feeling of a lump in your throat and shortness of breath are symptoms you need to discuss with your health care provider.


