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A member asked:

How soon does the depo shot work if it isn't given while on your period ?

A doctor has provided 1 answer

Quite soon: The injection of 250 mg of depo-medroxyprogesterone acetate usually blocks ovulation immediately when given during menstruation and this way prevents most pregnancies (91 to 96% effective). Its effectiveness is theoretically reduced if it is given after ovulation has already occurred but it becomes rapidly quite effective .

Answered 6/18/2016

1.2k views

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Related Questions

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I took Plan B last night and my first Depo shot will be given to me tomorrow, my question is will that affect the shot at all? I am not on my period

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A member asked:

How soon does the Depo-Provera provera (medroxyprogesterone) shot work? What if I got my first shot the second day of my period will it work right away?

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A member asked:

No menstrual period since miscarriage on 7 July 2017. Given one shot of depo after miscarriage. please help?

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I was given a depo shot after giving birth in January. I have been on periods since. They stopped for few weeks n started again?

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Since Stopping the depo shot I haven't had a period for 5 months and I am beginning to gain weight.Should I be concerned and get checked out?

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