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Zestra
Zestra is an arousal gel for women that claims to increase sexual pleasure. It contains borage seed oil, evening primrose oil, angelica root extract, ''Coleus forskohlii'' extract, ascorbyl palmitate, and dl-alpha tocopherol.〔(【引用サイトリンク】 Zestra )〕 The gel is intended to be applied topically to the outside of the female genitalia. After about five minutes, the woman experiences a "pleasant, tingly and/or warming sensation" that lasts for up to 45 minutes. Semprae Laboratories, maker of the product, calls this feeling the "Zestra Rush".〔Zestra Product Website. (Zestra FAQ ). Accessed Nov 11, 2010.〕
While claims of aphrodisiac properties are common to many substances, the effectiveness of Zestra is supported by two clinical trials. However, both studies included subjects with various sexual disorders, making the product's efficiency on healthy women less well established.〔Ferguson, David M., Singh, Gita S., Steidle, Christopher P., Alexander, J. Steven, Weihmiller, Mary
K. and Crosby, Martin G.(2003) 'Randomized, Placebo-Controlled, Double Blind, Crossover Design Trial of the Efficacy and Safety of Zestra for Women in Women With and Without Female Sexual Arousal Disorder', Journal of Sex & Marital Therapy, 29: 1, 33 — 44, 2003. (First Clinical Trial ). Nov 11, 2010〕〔Ferguson, David M., Hosmane, Balakrishna and Heiman, Julia R.(2010) 'Randomized, Placebo-Controlled, Double-Blind, Parallel Design Trial of the Efficacy and Safety of Zestra in Women With Mixed Desire/Interest/Arousal/Orgasm Disorders', Journal of Sex & Marital Therapy, 36: 1, 66 — 86. (Zestra Clinical Trial 2010 ).〕
== References ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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