immediate postpartum/postabortal injections and elimination of routine pregnancy testing are all steps that can help women increase their contraceptive success with DMPA.
Other issues that influence DMPA success include practice protocols that facilitate women's timely access to injections and important counseling messages, including information about ...
DMPA contains progestin ... If you don’t ovulate, you can’t become pregnant. The progestin in the injection also thickens the mucus on your cervix to help prevent sperm from getting through ...