By Casey B. Giebink, MSN, NP-C, WHNP-BC and Ivy M. Alexander, PhD, APRN, ANP-BC, FAAN
Although about one-third of women report concerns with sexual functioning, many healthcare providers (HCPs) do not feel comfortable screening for, diagnosing, or managing female sexual dysfunction (FSD). The authors offer guidance to HCPs for screening and diagnosing a variety of FSD disorders. In addition, the authors discuss pharmacotherapeutic options for managing these conditions, as well as these agents’ benefits, risks, and monitoring parameters.
Key words: female sexual dysfunction, estrogen, testosterone, bupropion, ospemifene, flibanserin
Female sexual dysfunction (FSD) is highly prevalent among women in the United States, yet patients rarely discuss sexual concerns with their healthcare provider (HCP). Investigators of the Women’s International Study of Health and Sexuality sent questionnaires to 2,050 U.S. women regarding health status, sexual desire, and distress caused by low desire.1 The study showed that 24%-36% of women aged 20-70 years could be classified as having low sexual desire. This prevalence highlights the need for HCPs to know how to communicate with, identify, and manage patients’ sexual concerns. To this end, the authors provide evidence-based recommendations drawn from the current literature regarding assessment and diagnosis of FSD, with an emphasis on pharmacologic options available to treat FSD. Most of the pharmacologic options for desire, arousal, and orgasm problems are prescribed off label.
Common barriers to identifying and managing FSD
Despite the high prevalence of FSD, many women do not broach the topic with their HCP, and many HCPs do not screen their patients for sexual disorders.2 In fact, fewer than 20% of HCPs ask about their patients’ sexual activity, including difficulties, enjoyment, and frequency.3
Urologists, gynecologists, and psychiatrists are the HCPs most likely to inquire about sexual functioning.4 However, one study showed that among 187 urologists, only 10% asked every patient about sexual function on a regular basis, as opposed to 87% who asked about sexual activity when the chief complaint was related to abdominal pain, urgency/frequency, incontinence, or a urinary tract infection.5 A survey of the attitudes of nurse practitioners (NPs) and physician assistants (PAs) toward management of sexual dysfunction revealed that only one-half felt comfortable discussing the topic and only 21% of NPs and 11% of PAs felt confident in managing FSD.6 Nevertheless, most NPs and PAs had a positive attitude toward the possibility of evaluating and managing their female patients’ sexual concerns.6
Various factors may hinder HCP–patient communication regarding sexual concerns. Potential barriers for HCPs include lack of time, lack of knowledge about FSD management options, and lack of training in how to communicate about FSD; barriers for patients include embarrassment and a belief that their HCP cannot help them.7 Some HCPs fear embarrassing or offending patients if they raise the topic,3 although most patients will discuss their sex practices if the HCP initiates the conversation.8
Even if a patient does discuss her sexual problems with her HCP, her concerns may not be properly addressed. One survey showed that among 3,807 women who considered seeking help for sexual dysfunction, fewer than half reported feeling hope, relief, validation, or satisfaction after discussing their concerns with a provider.9 In addition, patients were disappointed by their HCPs’ inability or unwillingness to evaluate, treat, and follow up on their complaints.9
Overcoming the barriers
Healthcare providers can increase the likelihood that FSD will be identified and addressed by initiating the conversation with patients, which will strengthen the HCP–patient relationship and help normalize patients’ concerns.9 Once both parties are comfortable, the HCP can take a sexual history, perform a thorough physical examination, and order appropriate laboratory tests.
To transition smoothly into taking a sexual history, HCPs can incorporate questions into the genitourinary/gynecologic/obstetric review of systems.10 Some patients may feel uneasy answering these questions, so HCPs can explain why such questions are being posed. For example, one can say, “I will be asking you some questions about your sexual activity to get a better idea of you as a whole and to ensure we are providing the most comprehensive care possible.” Informing women that FSD is common can facilitate a frank conversation.10
Screening for FSD with just a few questions can be informative. A literature review by Giraldi et al11 indicated that although multiple FSD screening tools are available, few standardized and culturally acceptable questionnaires are validated in general populations and can be used to assess for FSD in women with or without a partner and independent of the partner’s gender. As a result, HCPs can develop their own unbiased FSD screening questions based on their unique patient population. A patient’s sexual orientation should not be assumed; instead, HCPs need to ask about any and all sexual partners. Brief questions regarding sexual satisfaction and pain and the ability to reach an orgasm can determine if further screening is warranted.12 Three targeted questions include the following13:
• Do you have any questions or concerns about your sexual activity?
• Have you experienced any changes in sexual response, lubrication, or pain with sexual activity?
• Are you aware of any changes in your level of interest or desire for sexual activities?
If a woman—premenopausal or postmenopausal—answers “yes” to any of these questions, then further investigation is needed.
For a specific problem, HCPs need to explore the nature of the problem, its severity and duration, the degree of distress it causes, and any history of similar problems.13 The patient is asked to use her own words to describe any sexual difficulties she may be having.14 Because sexual functioning is multifaceted, HCPs need to consider a woman’s physical, surgical, medication, and social histories to uncover all possible factors causing or contributing to the sexual dysfunction (Table 1).14-16Physical examination
A physical exam is conducted to identify or exclude conditions that might cause or exacerbate FSD. This exam includes a general systemic survey with a focused cardiovascular exam, which can uncover systemic perfusion abnormalities that might contribute to FSD.15 A neurologic assessment of the effects of light touch and pressure on the external genitalia may reveal locations with hypersensitivity. A genitourinary exam is done to evaluate for structural abnormalities such as an imperforate hymen or vaginal septum and to look for signs of estrogen depletion (e.g., loss of vaginal rugae, pale mucosa, thin lining).15 An evaluation of pelvic muscle tone is important; both high tone and low tone can be associated with FSD. This evaluation is best done using a perineometer, a device placed within the vagina that provides feedback on the tone of the levator ani complex and obturator internus muscles.17 In the absence of this device, HCPs can evaluate tone during an internal exam by asking the woman to squeeze and relax the vaginal muscles.17 Of note, many women with FSD have normal physical exam findings.
Evaluating certain lab values can aid in identifying health conditions that may be contributing to sexual dysfunction. These lab tests include a complete blood count, fasting prolactin, a lipid profile, blood glucose, and thyroid hormone levels.18 Abnormal test results may reveal an underlying condition (e.g., anemia, thyroid disease, dyslipidemia, metabolic disorders, hormonal imbalances) causing or exacerbating the FSD.19 Evaluating the calculated free androgen index can also help in classifying sexual complaints; age-based normative values have been established.20 When a patient’s primary complaint is dyspareunia, vaginal, cervical, and/or vulvar cultures can be obtained to rule out infectious causes.14
DSM-5 changes to FSD diagnoses
The Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), which was published by the American Psychiatric Association in 2013, includes revisions to previous editions based on new research.21 Specific to the category of sexual dysfunction, the DSM-5 now requires that symptoms be present for at least 6 months. In addition, the DSM-5 includes gender-specific diagnoses, combines disorders that were previously separate, and removes the subtype of FSD due to psychological factors versus combined factors. Research suggests that sexual response cannot be categorized into specific stages and is not always linear. As a result, the DSM-5 combines sexual arousal disorder and sexual desire disorder into female sexual interest/arousal disorder. Another combined disorder in the DSM-5 is genito-pelvic pain/penetration disorder, which was developed because of the difficulty distinguishing between vaginismus and dyspareunia.
Initial management of FSD requires treating any contributing underlying physical conditions. If treatment of these conditions does not result in restoration of sexual function, other interventions for FSD are considered. Although this article focuses on pharmacotherapeutic options, patients can try nonpharmacologic interventions such as cognitive behavioral therapy (CBT), sex therapy, self-stimulation, and lubricating gels (Table 2).22,23 If nonpharmacologic therapies do not offer relief, pharmacologic options are considered.
Declining estrogen levels after menopause can lead to vulvovaginal atrophy (VVA), which can result in vaginal dryness, itching, and pressure and can lead to pain during sexual activity.24 Painful intercourse (dyspareunia) can diminish sexual pleasure and desire for sex. Exogenous estrogen therapies, both systemic and topical, are used to increase vaginal lubrication and promote a more pleasurable sexual experience.25
Compared with systemic estrogen products, vaginal estrogen products have been found to heighten genital vasculature (despite resulting in lower systemic levels of estrogen); systemic estrogen is more useful for relieving vasomotor symptoms (VMS) accompanying menopause.25 Conjugated estrogens vaginal cream (Premarin® Vaginal Cream) has an FDA indication for treatment of moderate to severe dyspareunia, a symptom of VVA due to menopause.26 Although estrogen therapies alone have not been found to directly increase sexual desire, they diminish dyspareunia, which may indirectly increase a woman’s interest in sexual activity.25
Many formulations of systemic and vaginal estrogen are available. If a woman’s FSD complaint is related to VVA, a vaginal formulation is preferred.27 Three vaginal estrogen formulations are available: creams, a ring, and a tablet (Table 3).27 For the tablet and creams, a higher dose and/or dosing frequency is typically used for 1-2 weeks until relief is achieved; a tapered dose can then be used for maintenance.27 Whereas most women find relief after 3 weeks of treatment, some may require up to 4-6 weeks.28 Low-dose vaginal estrogen therapy can be used indefinitely because of the low adverse effect profile; however, given limited data on use beyond 1 year, women should be evaluated annually to determine the need for continued treatment.29
The most common side effects of topical estrogen cream are headache, breast pain, pelvic pain, vasodilation, leukorrhea, metrorrhagia, vaginitis, and vulvovaginal disorder.26 Most side effects subside with ongoing use. Although systemic estrogen use has been linked to an increased risk for endometrial hyperplasia, venous thromboembolism, and breast cancer, little evidence suggests an increased risk with topical estrogen use.27 The North American Menopause Society (NAMS) released new guidelines for prescribing hormone therapy.30 According to these 2012 guidelines, topical estrogen is less likely than standard-dose oral estrogen to cause blood clots or stroke; however, more research is needed to reach definitive conclusions. A Cochrane review showed no increase in endometrial proliferation with vaginal estrogen versus placebo.27 Nevertheless, local estrogens can be absorbed into the bloodstream and increase the amount of systemic estrogen. Given the limited research, HCPs need to use clinical judgment when prescribing estrogen and monitor women closely for vaginal spotting/bleeding and other worrisome complaints.
If estrogen alone does not ease FSD symptoms, off-label addition of testosterone to estrogen therapy (ET) may increase libido and enhance sexual response.31 Use of testosterone in women is off label; this agent is prescribed with caution after patients are educated about the risks. A 2005 Cochrane review of 23 trials concluded that addition of testosterone therapy (TT) to ET improved sexual desire in postmenopausal women.32 The likely mechanism of action of combined therapy was related to the fact that use of exogenous testosterone increases circulating free testosterone and decreases sex hormone-binding globulin (SHBG). The subsequent increase in bioavailable testosterone may correlate with increased sexual desire.
Limited data on the long-term effects of TT led the FDA to reject a proposed testosterone patch for women with FSD. However, a 1% testosterone gel, FDA-approved for use in men only, is often prescribed off label to postmenopausal women with sexual dysfunction.33 One study showed that a dosage of 10 mg/day, applied in a thin layer to 15 cm2 of the inner thigh, led to mean testosterone levels of 3.0 nmol/L, which is in the high-normal range for premenopausal women (?2.5-3.0 nmol/L).33 The advantage of the transcutaneous route of administration over other routes (e.g., subcutaneous implant, intramuscular injection) is that it avoids the high hormone levels in the hepatic portal vein, which helps minimize assault to the liver.33
The most common short-term side effects of TT in women are hirsutism, acne, and a deepened voice, all of which are mild and reversible.34 Long-term side effects of concern are cardiovascular disease (CVD) and breast cancer. Preliminary studies have shown that TT reduces high-density lipoprotein cholesterol levels and increases low-density lipoprotein cholesterol levels; however, no study has looked at the correlation between TT in women and CVD.32 Studies examining the effects of TT on breast cancer risk are inconclusive.32 Absolute contraindications to TT include a history of breast cancer, endometrial cancer, venothrombotic events, or CVD.14
When prescribing TT, HCPs should ask women to undergo baseline and annual breast exams and mammography, along with a pelvic exam—with special consideration paid to abnormal bleeding.14 In addition, women must be regularly evaluated for acne, hirsutism, and androgenic alopecia.14 Laboratory parameters monitored at baseline, after 3-6 months of use, and then periodically thereafter include SHBG, total testosterone, fasting lipid panel, and liver function tests.14
In 2005, NAMS published a position statement regarding the role of TT in postmenopausal women. The society concluded that TT is a valuable pharmacologic option for postmenopausal women who present with symptoms of decreased sexual desire.35 Nevertheless, NAMS cautions that insufficient data are available regarding the safety and efficacy of TT in women for longer than 6 months.35 Given these data, testosterone is prescribed with caution, with extensive patient education.
Bupropion is a norepinephrine and dopamine reuptake inhibitor antidepressant without serotonergic effects.36 Although bupropion is most commonly used as an antidepressant, this agent is used off label to treat sexual dysfunction in non-depressed women.37 The exact mechanism of bupropion’s efficacy for this indication is unknown but may be related to increased uptake of dopamine and norepinephrine, both of which are correlated with increased sexual responsiveness.36
The prescribed dosage of bupropion should not exceed 400 mg/day for the sustained-release formulation or 450 mg/day for the immediate- or extended release formulations; higher dosages can increase the incidence of side effects such as headache, agitation, insomnia, nausea, and possibly seizures.38 Bupropion is not prescribed to patients with a history of anorexia, bulimia, or seizure disorders. Bupropion users must be monitored for neuropsychiatric changes such as hostility, agitation, depression, and suicidality.39 Patients are counseled that treatment efficacy may not occur for 4-6 weeks.
Bupropion is a promising non-hormonal treatment option for FSD. Preliminary studies have shown encouraging results; however, more extensive research is needed before FSD can be listed as an indication for bupropion use.40Ospemifene
In 2013, the FDA approved ospemifene (OsphenaTM) for treatment of moderate to severe dyspareunia caused by VVA in menopausal women.41 Ospemifene, an oral selective estrogen receptor modulator, is the only non-estrogen compound approved in the U.S. to treat moderate to severe dyspareunia.42 This medication can be offered to women who are not candidates for ET but who have FSD related to dyspareunia. In two 12-week phase III clinical trials, ospemifene significantly improved vaginal dryness and dyspareunia, vaginal maturation index, and vaginal pH.43 The most effective dosage is 60 mg/day.43
The most common adverse effect of ospemifene is VMS.43 This agent is contraindicated in women with genital bleeding of unknown cause, estrogen-dependent neoplasia, personal history of deep vein thrombosis, pulmonary embolism, stroke, or myocardial infarction. Ospemifene should not be prescribed to women with a history of breast cancer or who are at high risk for breast cancer. Pre-clinical and clinical trials show a promising effect of ospemifene on bone density and breast tissue, but long-term data on the safety of this medication are limited.42Flibanserin
Flibanserin, an oral agent proposed for treatment of premenopausal hypoactive sexual desire disorder, has been shown to significantly increase sexual desire and the number of sexually satisfying events among women taking 100 mg at bedtime.44 The FDA initially rejected this medication in 2010.44 When Sprout Pharmaceuticals reapplied for approval in 2013, flibanserin was once again rejected; this time, the FDA indicated that additional studies in healthy subjects were needed to evaluate drug interactions and the drug’s possible adverse effect on driving.45 Sprout is expecting to resubmit the proposal by the end of the first quarter of 2015.45 No more information on the proposal was available as this article went to press.
Given the prevalence of FSD, HCPs must know how to screen for and diagnose FSD, and then manage it or know when to refer. HCPs need to take a short sexual history in all women, and ask them whether they have concerns about their sexual activity or about changes in their sexual desire or response. If the history uncovers a possibility of FSD, a thorough physical exam and lab testing are done. For women in whom FSD is diagnosed, nonpharmacologic interventions include CBT, sex therapy, self-stimulation, and lubricants. Two medications—conjugated estrogens vaginal cream and ospemifene —have a specific indication for dyspareunia. Although no pharmacologic agent has been approved by the FDA to treat desire, arousal, or orgasmic dysfunction in women, interest in such agents is growing. In each case, HCPs weigh the risks and benefits of specific treatments, offer extensive patient counseling, and provide close follow-up.
Casey B. Giebink is an adult and women’s health nurse practitioner at Medstar Georgetown University Hospital, Department of Ob&Gyn in Washington, DC. Ivy M. Alexander is an adult nurse practitioner specializing in midlife women’s health at the University of Connecticut Health Center in Storrs and Clinical Professor at the University of Connecticut School of Nursing. The authors state that they do not have a financial interest in or other relationship with any commercial product named in this article.
1. Leiblum SR, Koochaki PE, Rodenberg CA, et al. Hypoactive sexual desire disorder in postmenopausal women: US results from the Women’s International Study of Health and Sexuality (WISHeS). Menopause. 2006;13(1):46-56.
2. Harsh V, McGarvey EL, Clayton AH. Physician attitudes regarding hypoactive sexual desire disorder in a primary care clinic: a pilot study. J Sex Med. 2008;5(3):640-645.
3. Loeb DF, Aagaard EM, Cali SR, Lee RS. Modest impact of a brief curricular intervention on poor documentation of sexual history in university-based resident internal medicine clinics. J Sex Med. 2010; 7(10):3315-3321.
4. Tsimtsiou Z, Hatzimouratidis K, Nakopoulou E, et al. Predictors of physicians’ involvement in addressing sexual health issues. J Sex Med. 2006;3(4):583-588.
5. Bekker M, Beck J, Putter H, et al. The place of female sexual dysfunction in the urological practice: results of a Dutch survey. J Sex Med. 2009;6(11):2979-2987.
6. Mansell D, Salinas G, Sanchez A, Abdolrasulnia M. Attitudes toward management of decreased sexual desire in premenopausal women: a national survey of nurse practitioners and physician assistants. J Allied Health. 2011;40(2):64-71.
7. Roos A-M, Thakar R, Sultan A, Scheer I. Female sexual dysfunction: are urogynecologists ready for it? Int Urogynecol J. 2009;20(1):89-101.
8. Julien JO, Thom B, Kline NE. Identification of barriers to sexual health assessment in oncology nursing practice. Oncol Nurs Forum. 2010;37(3):E186-E190.
9. Berman L, Berman J, Felder S, et al. Seeking help for sexual function complaints: what gynecologists need to know about the female patient’s experience. Fertil Steril. 2003;
10. Peck SA. The importance of the sexual health history in the primary care setting. J Obstet Gynecol Neonatal Nurs. 2001;30(3):269-274.
11. Giraldi A, Rellini A, Pfaus J, et al. Questionnaires for assessment of female sexual dysfunction: A review and proposal for a standardized screener. J Sex Med. 2011;8(10):2681-2706.
12. Andrews WC. Approaches to taking a sexual history. J Womens Health Gend Based Med. 2000;9 (suppl 1):S21-S24.
13. Sarrel PM. Sexual dysfunction: treat or refer. Obstet Gynecol. 2005;
14. Basson R, Wierman ME, Van Lankveld J, Brotto L. Summary of the recommendations on sexual dysfunctions in women. J Sex Med. 2010;7(1 pt 2):314-326.
15. Zakhari R. Female sexual dysfunction: a primary care perspective. J Am Acad Nurse Pract. 2009;21(9): 498-505.
16. Kaplan C. Assessing & managing female sexual dysfunction. Nurs Pract. 2009;34(1):42-48.
17. Rogalski M, Kellogg-Spadt S, Hoffmann A, et al. Retrospective chart review of vaginal diazepam suppository use in high-tone pelvic floor dysfunction. Int Urogynecol J. 2010;21(7):895-899.
18. Wylie K, Daines B, Jannini EA, et al. Loss of sexual desire in the postmenopausal woman. J Sex Med. 2007;4(2):395-405.
19. Krychman ML, Dizon D, Amsterdam A, Spadt SK. Evaluation of the female with sexual dysfunction. In: Mulhall JP, Incrocci L, Goldstein I, Rosen R, eds. Cancer and Sexual Health. Humana Press; 2011:351-356.
20. Guay A, Jacobson J, Munarriz R, et al. Serum androgen levels in healthy premenopausal women with and without sexual dysfunction: Part B: Reduced serum androgen levels in healthy premenopausal women with complaints of sexual dysfunction. Int J Impot Res. 2004;16(2):121-129.
21. American Psychiatric Association. Highlights of Changes from DSM-IV-TR to DSM-5. 2013. http://www.psychiatry.org/dsm5
22. Leiblum SR, Wiegel M. Psychotherapeutic interventions for treating female sexual dysfunction. World J Urol. 2002;20(2):127-136.
23. Palacios S, Graziottin A. Patient scenario: A 53-year-old woman with hypoactive sexual desire disorder. Maturitas. 2009;63(2):164-168.
24. Katz A. When sex hurts: Menopause-related dyspareunia. Am J Nurs. 2007;107(7):34-36.
25. Long CY, Liu CM, HSU SC, et al. A randomized comparative study of the effects of oral and topical estrogen therapy on the vaginal vascularization and sexual function in hysterectomized postmenopausal women. Menopause. 2006;13(5):737-743.
26. Premarin Vaginal prescribing information. Wyeth Pharmaceuticals Inc., a subsidiary of Pfizer Inc. May 2012. http://labeling.pfizer.com/showlabeling.aspx?id=132
27. Simon JA. Identifying and treating sexual dysfunction in postmenopausal women: the role of estrogen deficiency and estrogen therapy. J Womens Health (Larchmt). 2011;20(10):1453-1465.
28. Sturdee DW, Panay N, International Menopause Society Writing Group. Recommendations for the management of postmenopausal vaginal atrophy. Climacteric. 2010; 13(6):509-522.
29. North American Menopause Society. Estrogen and progestogen use in postmenopausal women: position statement of the North American Menopause Society. Menopause. 2010;17(2):242-255.
30. North American Menopause Society. The 2012 hormone therapy position statement of The North American Menopause Society. Menopause. 2012;19(3):257-271.
31. Raghunandan C, Agrawal S, Dubey P, et al. A comparative study of the effects of local estrogen with or without local testosterone on vulvovaginal and sexual dysfunction in postmenopausal women. J Sex Med. 2010;7(3):1284-1290.
32. Somboonporn W, Davis S, Seif MW, Bell R. Testosterone for peri-and postmenopausal women. Cochrane Database Syst Rev. 2005;
33. Nathorst böös J, Jarkander-Rolff M, Carlström K, et al. Percutaneous administration of testosterone gel in postmenopausal women-a pharmacological study. Gynecol Endocrinol. 2005;20(5):243-248.
34. Kingsberg SA, Simon JA, Goldstein I. The current outlook for testosterone in the management of hypoactive sexual desire disorder in postmenopausal women. J Sex Med. 2008;5(suppl 4):182-193.
35. North American Menopause Society. The role of testosterone therapy in postmenopausal women: position statement of the North American Menopause Society. Menopause. 2005;12(5):496-511.
36. Segraves RT, Clayton A, Croft H, et al. Bupropion sustained release for the treatment of hypoactive sexual desire disorder in premenopausal women. J Clin Psychopharmacol. 2004;24(3):339-342.
37. Segraves RT, Croft H, Kavoussi R, et al. Bupropion sustained release (SR) for the treatment of hypoactive sexual desire disorder (HSDD) in nondepressed women. J Sex Marital Ther. 2001;27(3):303-316.
38. Ginzburg R, Wong Y, Fader JS. Effect of bupropion on sexual dysfunction. Ann Pharmacother. 2005; 39(12):2096-2099.
39. GlaxoSmithKline. Wellbutrin: Medication Guide. 2009.
40. Safarinejad MR, Hosseini SY, Asgari MA, et al. A randomized, double-blind, placebo-controlled study of the efficacy and safety of bupropion for treating hypoactive sexual desire disorder in ovulating women. BJU Int. 2010;106(6):832-839.
41. US Food and Drug Administration. FDA Approves Osphena for Postmenopausal Women Experiencing Pain During Sex. 2013. www.fda.gov/NewsEvents/Newsroom/Press
42. Soe L, Wurz G, Kao CJ, DeGregorio M. Ospemifene for the treatment of dyspareunia associated with vulvar and vaginal atrophy: potential benefits in bone and breast. Int J Womens Health. 2013;5:605-611.
43. North American Menopause Society. Management of symptomatic vulvovaginal atrophy: 2013 position statement of The North American Menopause Society. 2013;20(9):888-902.
44. Thorp J, Simon J, Dattani D, et al. Treatment of hypoactive sexual desire disorder in premenopausal women: efficacy of flibanserin in the DAISY Study. J Sex Med. 2012;9(3):
45. Reuters. PR Newswire. Sprout Pharmaceuticals receives clear guidance from FDA on path forward to resubmit new drug application for flibanserin, the first potential medical treatment for hypoactive sexual desire disorder in premenopausal women. February 11, 2014. www.reuters.com/article/2014/02/11/sprout-pharmaceutical-idUSnPn