Shot
94% effective, Lasts 3 months
Depo-Provera
The shot is given in the arm, thigh or butt by a provider during an office visit every 12 weeks. It must be given on time every 12 week to be effective. Read more.
The shot does not protect against HIV or STDs. Always use a condom.
Side effects may include irregular bleeding and spotting (especially in the first months), fewer and lighter periods for most women, but longer, heavier periods for some women.
Effectiveness based upon typical use.
