You can continue to drink some alcohol while taking duloxetine. may have a lower sex drive; Both men and women might see some growth in their breasts. Decreased libido, or sexual desire, may occur in patients who use Cymbalta, specifically in male patients. According to arkansashealthandliving.com, about 6 percent of men and.  Sexual dysfunction is defined as disturbance in sexual desire and in the . our patient, we found a possible association of duloxetine with decrease in libido.