1 doctor weighed in:

How fast does it take the IUD to work?

1 doctor weighed in
Dr. Pavel Conovalciuc
Family Medicine

In brief: Depends

Copper iud, paraguard, works right after incertion, whereas Mirena (levonorgestrel) may take a full cycle to become effective, so if you had Mirena (levonorgestrel) inserted, you will need to use alternative contraception for the first month.

In brief: Depends

Copper iud, paraguard, works right after incertion, whereas Mirena (levonorgestrel) may take a full cycle to become effective, so if you had Mirena (levonorgestrel) inserted, you will need to use alternative contraception for the first month.
Dr. Pavel Conovalciuc
Dr. Pavel Conovalciuc
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