Protection from what: It turns out that regular Depo-Provera shots every 3mo is very effective at preventing pregnancy. It's not 100% effective but as close as we can get if you get shot in timely manner. So Plan B emergency contraception isn't necessary nor will it affect Depo-Provera. But no hormonal birth control protects against sexually transmitted diseases/infections. That's why condom use is still necessary, too
Answered 11/27/2017
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Neither medication: will interfere with the other- but Plan B is not necessary if you just had depo provera administered.
Answered 9/8/2017
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