2 doctors weighed in:

How soon does the ocp "mircette" become effective?

2 doctors weighed in
Dr. Nancy Durso
Fertility Medicine
1 doctor agrees

In brief: Depends

All birth control pills can be effective in the first cycle of taking them if they are started before the 4th day of the menstrual cycle.
To be doubly sure use alternate contraception for 1 month while starting the pill.

In brief: Depends

All birth control pills can be effective in the first cycle of taking them if they are started before the 4th day of the menstrual cycle.
To be doubly sure use alternate contraception for 1 month while starting the pill.
Dr. Nancy Durso
Dr. Nancy Durso
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