Emergency birth control has been available for many years, starting with medicine approaches that were not approved by the Food and Drug Administration. In 1999, Plan B, levonorgestrel pills taken by mouth, was approved for use by prescription and in 2006 was approved without prescription for women 18 years old and over. It was approved for those 17 and older in 2009 without prescription. In late February, 2014, FDA approved over the counter sales of generic emergency contraceptives without proof of age.
We are lucky to have so many birth control options available to us. Not all methods will be ideal for all couples, so how do you figure out how to pick a method? Here are some features to consider – but keep in mind that not all features will be important to you in your personal circumstances.
Effectiveness: How well will a particular approach work to prevent pregnancy?
There are some times in life where avoiding pregnancy is more important than other times, so most effective forms should be selected when it is critical to prevent pregnancy.
There are two scales of effectiveness, typical user effectiveness and perfect use rates. Some birth control depends a lot on...