<prompt> With the use of DMPA contraceptive, the side effects are all of the following exceptChange in quantity and quality of breast milkWeight gainIrregular bleedingAmenorrhea  <response>: The advantage of DMPA is that it does not affect lactation Side effects include weight gain, irregular menstrual bleeding and prolonged infeility after its use Reference : Park;s textbook of preventive and social medicine, 23rd edition, Page no: 503 