This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
DMPA is an injectible contraceptive given every - 
Select and explain. 
A. Three weeks, B. Two months, C. Three months, D. Two years
C: Three months
Answer: C: Three months 
Explanation: park's textbook of preventive and social medicine 23rd edition. *DMPA has been in use since 1960s.The standard dose is an I'M injection of 150 mg every 3 months.It gives protection from pregnancy in 99% of women for at least 3 months.