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A member asked:

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

A doctor has provided 1 answer
Dr. Mary Vanko answered

Specializes in Obstetrics and Gynecology

Ocp effectiveness.: To be absolutely safe, one month.

Dr Villaplana and another doctor agreed

Answered 5/31/2012

5.8k views

Thank

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