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  • Title: Cimicifuga racemosa dried ethanolic extract in menopausal disorders: a double-blind placebo-controlled clinical trial.
    Author: Frei-Kleiner S, Schaffner W, Rahlfs VW, Bodmer Ch, Birkhäuser M.
    Journal: Maturitas; 2005 Aug 16; 51(4):397-404. PubMed ID: 16039414.
    Abstract:
    OBJECTIVES: To compare the efficacy and safety of the black cohosh root extract Cr 99 with placebo in women with climacteric complaints. METHODS: A multicenter, randomized, placebo-controlled, double-blind, parallel group study was conducted in 122 menopausal women (intention-to-treat population) with > or =3 hot flashes a day, treated over 12 weeks. Two main efficacy measures - weekly weighted score of hot flashes and Kupperman Index - and secondary efficacy variables, e.g. Menopause Rating Scale, were defined. Routine safety laboratory parameters and adverse events were documented. RESULTS: The primary efficacy analysis showed no superiority of the tested black cohosh extract compared to placebo. However, in the subgroup of patients with a Kupperman Index> or =20 a significant superiority regarding this index could be demonstrated (P<0.018). A decrease of 47% and 21% was observed in the black cohosh and placebo group, respectively. The weekly weighted scores of hot flashes (P<0.052) and the Menopause Rating Scale (P<0.009) showed similar results. Prevalence and intensity of the adverse events did not differ in the two treatment groups. CONCLUSIONS: The results indicate a superiority of the tested Cimicifuga racemosa extract compared to placebo in patients with menopausal disorders of at least moderate intensity according to a Kupperman Index > or =20, but not in the intention-to-treat population as a whole.
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