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==Key Stage 4==
===Meaning===
The '''contraceptive injection''' is a [[hormone|hormonal]] method of [[contraception]] used to prevent [[pregnancy]] taken by injecting [[hormone]]s into the [[blood]].
===About the Contraceptive Injection===
: '''Contraceptive injections''' contain [[progesterone]] which [[inhibit]]s the production of [[Follicle Stimulating Hormone|follicle stimulating hormone]] so that no [[ovum|ova]] will mature.
: The '''contraceptive injection''' lasts 12 weeks before another one is needed.