Oral treatment with ethyl acetate fraction of the hydroalcoholic extract of Black Maca for 7 days had the most beneficial effect on epididymal sperm count and daily sperm count compared with other fractions [ 76 ]. Dopamine plays a crucial role in the central control of sexual behavior in males [ 13 ]. It also significantly enhanced the effects of cGMP and isobutylmethylxanthine. A study in the Canadian Medical Association Journal found that 35 to 40 percent of Canadian women suffer from low libido, but only 10 to 12 percent of them are worried enough to do something about it, says Lori Brotto, an associate professor at the University of British Columbia and a Vancouver psychologist who specializes in female sexual arousal and dysfunction. Apart from these herbs large numbers of plants have also been tested Formula releases her inhibitions sex evaluated for effect on sexual functions Formula releases her inhibitions sex reproductive parameters, a Men tampon sex description and names of these herbs are provided in Table 2.