<prompt> DMPA is an injectible contraceptive given every -Three weeksTwo monthsThree monthsTwo years  <response>: parks textbook of preventive and social medicine 23rd edition. DMPA has been in use since 1960s.The standard dose is an IM injection of 150 mg every 3 months.It gives protection from pregnancy in 99 of women for at least 3 months. 