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The recommended dose is 150 mg of CI every 3 months (13 weeks) administered by deep IM injection in the gluteal or deltoid muscle.

If you are not able to get your birth control shot on the recommended schedule, you can get it up to two weeks early. The soonest you can safely receive your next shot is 10 weeks after your last injection. Those who get the shot within this window will still have the same level of protection against pregnancy.

If you don't receive the next shot in time, you risk becoming pregnant because of decreased levels of the drug in your body. If you can't get your next shot on time, you should use a backup method of birth control.

belongs to a class of drugs called Antineoplastics, Hormones; Progestins. It is not known if is safe and effective in females of non-reproductive age.

With , you must receive another shot once every three months (12 weeks) to remain fully protected. You should not be more than 2 weeks late coming in for the shot, otherwise you can get pregnant. However you can come in earlier than 12 weeks if needed.

Most women experience breakthrough bleeding or spotting for the first several months after they begin getting the shot. It may take six months to a year before the side effects end and your periods return to normal. For some women, their period may go away entirely.

Schedule your next injection. injections should be given every three months. If you wait longer than 13 weeks between injections, you might need to take a pregnancy test before your next injection.

Broadly speaking each progesterone contraception injection () will last for 10 to 12 weeks, after which there is not enough contraceptive left at the injection site to definitely prevent a pregnancy.

Contraceptive Injection is given as an intramuscular injection (a shot) in the buttock or upper arm once every 3 months (13 weeks).