PMID- 23221577 OWN - NLM STAT- MEDLINE DCOM- 20130319 LR - 20230318 IS - 1938-3207 (Electronic) IS - 0002-9165 (Print) IS - 0002-9165 (Linking) VI - 97 IP - 2 DP - 2013 Feb TI - Effect of coenzyme Q(1)(0) supplementation on heart failure: a meta-analysis. PG - 268-75 LID - 10.3945/ajcn.112.040741 [doi] AB - BACKGROUND: Coenzyme Q(1)(0) (CoQ(1)(0); also called ubiquinone) is an antioxidant that has been postulated to improve functional status in congestive heart failure (CHF). Several randomized controlled trials have examined the effects of CoQ(1)(0) on CHF with inconclusive results. OBJECTIVE: The objective of this meta-analysis was to evaluate the impact of CoQ(1)(0) supplementation on the ejection fraction (EF) and New York Heart Association (NYHA) functional classification in patients with CHF. DESIGN: A systematic review of the literature was conducted by using databases including MEDLINE, EMBASE, the Cochrane Central Register of Controlled Trials, and manual examination of references from selected studies. Studies included were randomized controlled trials of CoQ(1)(0) supplementation that reported the EF or NYHA functional class as a primary outcome. Information on participant characteristics, trial design and duration, treatment, dose, control, EF, and NYHA classification were extracted by using a standardized protocol. RESULTS: Supplementation with CoQ(1)(0) resulted in a pooled mean net change of 3.67% (95% CI: 1.60%, 5.74%) in the EF and -0.30 (95% CI: -0.66, 0.06) in the NYHA functional class. Subgroup analyses showed significant improvement in EF for crossover trials, trials with treatment duration