3 doctors weighed in:

How long does triphasil (ethinyl estradiol and levonorgestrel) take to become effective?

3 doctors weighed in
Dr. Mary Vanko
Obstetrics & Gynecology
2 doctors agree

In brief: Ocp effectiveness.

To be absolutely safe, one month.

In brief: Ocp effectiveness.

To be absolutely safe, one month.
Dr. Mary Vanko
Dr. Mary Vanko
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