> Nearly a quarter of participants experienced pain at the injection site, nearly half got acne, more than 20 percent had a mood disorder, 38 percent experienced an increased sexual drive, and 15 percent reported muscle pain. Other, rarer side effects included testicular pain, night sweats, and confusion. One study participant died by suicide, though the researchers determined it wasn’t related to the birth control. Twenty men dropped out of the study because of the side effects.
[1] http://www.vox.com/2016/11/2/13494126/male-birth-control-stu...