1 doctor weighed in:

How long does the birth control pill take to be effective? 3rd cycle?

1 doctor weighed in
Dr. Michael Flax
Obstetrics & Gynecology

In brief: Probably immediately

The pill is probably effective immediately.
..But i would recommend you use barrier contraception (condoms) until you finish the first three weeks of your starting pack just to be safe.

In brief: Probably immediately

The pill is probably effective immediately.
..But i would recommend you use barrier contraception (condoms) until you finish the first three weeks of your starting pack just to be safe.
Dr. Michael Flax
Dr. Michael Flax
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