Sildenafil Treatment of Women With Antidepressant-Associated Sexual Dysfunction
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Context
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Antidepressant-associated sexual dysfunction is<sup> </sup>a common adverse effect that frequently results in premature<sup> </sup>medication treatment discontinuation and for which no treatment<sup> </sup>has demonstrated efficacy in women.<sup> </sup>
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<p><b>Objective </b>To evaluate the efficacy of sildenafil for sexual<sup> </sup>dysfunction associated with selective and nonselective serotonin<sup> </sup>reuptake inhibitors (SRIs) in women.</p>
<p><b>Design, Setting, and Participants </b>An 8-week prospective,<sup> </sup>parallel-group, randomized, double-blind, placebo-controlled<sup> </sup>clinical trial conducted between September 1, 2003, and January<sup> </sup>1, 2007, at 7 US research centers that included 98 previously<sup> </sup>sexually functioning, premenopausal women (mean [SD] age 37.1<sup> </sup>[6] years) whose major depression was remitted by SRIs but who<sup> </sup>were also experiencing sexual dysfunction.<sup> </sup></p>
<p><b>Intervention </b>Forty-nine patients were randomly assigned<sup> </sup>to take sildenafil or placebo at a flexible dose starting at<sup> </sup>50 mg adjustable to 100 mg before sexual activity.</p>
<p><b>Main Outcome Measures </b>The primary outcome measure was<sup> </sup>the mean difference in change from baseline to study end (ie,<sup> </sup>lower ordinal score) on the Clinical Global Impression sexual<sup> </sup>function scale. Secondary measures included the Female Sexual<sup> </sup>Function Questionnaire, the Arizona Sexual Experience scale-female<sup> </sup>version, the University of New Mexico Sexual Function Inventory-female<sup> </sup>version, a sexual activity event log, and the Hamilton Depression<sup> </sup>Rating scale. Hormone levels were also assessed.<sup> </sup></p>
<p><b>Results </b>In an intention-to-treat analysis, women treated<sup> </sup>with sildenafil had a mean Clinical Global Impression–sexual<sup> </sup>function score of 1.9 (95% confidence interval [CI], 1.6-2.3)<sup> </sup>compared with those taking placebo (1.1; 95% CI, 0.8-1.5), with<sup> </sup>a mean end point difference of 0.8 (95% CI, 0.6-1.0; <i>P</i> = .001).<sup> </sup>Assigning baseline values carried forward to the 22% of patients<sup> </sup>who prematurely discontinued resulted in a mean end point in<sup> </sup>the sexual function score of 1.5 (95% CI, 1.1-1.9) among women<sup> </sup>taking sildenafil compared with 0.9 (95% CI, 0.6-1.3) among<sup> </sup>women taking placebo with a mean end point difference of 0.6<sup> </sup>(95% CI, 0.3-0.8; <i>P</i> = .03). Baseline endocrine levels<sup> </sup>were within normal limits and did not differ between groups.<sup> </sup>The mean (SD) Hamilton scores for depression remained consistent<sup> </sup>with remission in both groups (4.0 [3.6]; <i>P</i> = .90).<sup> </sup>Headache, flushing, and dyspepsia were reported frequently during<sup> </sup>treatment, but no patients withdrew because of serious adverse<sup> </sup>effects.<sup></sup></p>
<p><b>Conclusion </b>In this study population, sildenafil treatment<sup> </sup>of sexual dysfunction in women taking SRIs was associated with<sup> </sup>a reduction in adverse sexual effects.<sup> </sup></p>
<p><strong>Source:<sup> </sup><i>JAMA.</i> 2008;300(4):395-404. </strong></p>
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