Effectiveness: 92-99.7%

A sticky medicated patch that delivers hormones through the skin. Each week for 3 weeks in a row, the user puts a new patch on their arm, shoulder, stomach, back or buttocks. It works by preventing ovulation.

Availability: Prescription only 
 

Cause of Failures: Patch falls off or user forgets to take off the old patch and replace it with a new one
 

STI Prevention: None
 

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