Coenzyme Q-10 (or CoQ10) is a vitamin-like substance that participates in the production of energy in the human body. Large concentrations of CoQ10 are found in organs with high energy requirements, such as the heart.

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Coenzyme Q-10 has been the subject of numerous studies. In 2007 a major meta-analysis published in the Journal of Hypertension reviewed 12 clinical trials which included 362 patients. The researchers concluded that, “coenzyme Q10 has the potential in hypertensive patients to lower systolic blood pressure by up to 17 mm Hg and diastolic blood pressure by up to 10 mm Hg without significant side effects.”

For more information:
Bonakdar R, Guarneri E. Coenzyme Q10. American family Physician. 2005; 27 (6):1065-1070. Available at: http://www.aafp.org/afp/20050915/1065.html. Accessed June 8, 2009.
Rosenfeldt FL, Haas SJ, Krum H, et. al. Coenzyme Q10 in the treatment of hypertension: a meta-analysis of the clinical trials. J Hum Hypertens. 2007 Apr;21(4):297-306. Available at: http://www.ncbi.nlm.nih.gov/pubmed/17287847. Accessed June 8, 2009.