Información de la droga para Femring (estradiol acetate vaginal ring) (Warner Chilcott (US), LLC): DESCRIPTION

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  • Femring® (estradiol acetate vaginal ring) is an off-white, soft, flexible ring with a central core containing estradiol acetate.

    Femring is made of cured silicone elastomer composed of dimethyl polysiloxane silanol, silica (diatomaceous earth), normal propyl orthosilicate, stannous octoate; barium sulfate and estradiol acetate. The rings have the following dimensions: outer diameter 56 mm, cross-sectional diameter 7.6 mm, core diameter 2 mm.

    Femring is available in two strengths: Femring 0.05 mg/day has a central core that contains 12.4 mg of estradiol acetate, which releases at a rate equivalent to 0.05 mg of estradiol per day for 3 months. Femring 0.10 mg/day has a central core that contains 24.8 mg of estradiol acetate, which releases at a rate equivalent to 0.10 mg of estradiol per day for 3 months.

    Estradiol acetate is chemically described as estra-1,3,5(10)-triene-3,17ß-diol-3-acetate. The molecular formula of estradiol acetate is C20H26O3 and the structural formula is:

    The molecular weight of estradiol acetate is 314.42.

  • Drug Information Provided by National Library of Medicine (NLM).
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