Two randomized double-blind, placebo controlled trials in surgically postmenopausal (uterus and ovaries removed) women with HSDD demonstrated that transdermal testosterone patch treatment resulted in significant improvements in the frequency of satisfying sexual activity and sexual desire, as well as a decrease in sexual distress.

A total of 132 participants from the 2 trials were interviewed after a 6-month treatment period regarding their experience with the treatment. Results revealed a significant increase in frequency of satisfying sexual activity and sexual desire based on women experiencing the treatment as beneficial. Those women had an average increase in sexual activity of 4.4 times per 4 weeks. In contrast, women who did not experience a benefit had only a 0.5 increase in activity per 4 weeks.

'More women on testosterone experienced a meaningful benefit (52 percent vs. 31 percent) and, in fact, the odds of experiencing a meaningful benefit on testosterone were 2.4 times greater than that of placebo,' said Sheryl Kingsberg, principal author of the study.

Since the women were also able to judge for themselves whether or not the treatment was beneficial, those who experienced benefit were interested in continuing treatment.