The Shot (Depo-Provera)

Effectiveness: 99-99.7%

An injection (shot) of hormones given by a health care provider every 12 weeks (3 months). User may stop getting their period after one year of receiving the shot. It works by preventing ovulation.

 

Availability: Prescription only 
 

Cause of Failures: User doesn't return to the clinic to get the next shot or fails to return in time
 

STI Prevention: None
 

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