Does Zoloft affect the IUD

According to Drugs.com...Coadministration with fluvoxamine may increase the plasma concentrations of drugs that are substrates of the CYP450 3A4 isoenzyme. The mechanism is decreased clearance due to competitive inhibition of CYP450 3A4 activity by fluvoxamine.

My pharmacist said this means that it will take longer for the progestin in the Birth Control to be metabolized (processed) by your body so will stay in your body longer. She said this will actually cause you to have more of the hormone in your body... and not less. She said that taking Luvox with birth control pills will have no effect on the efficacy of the birth control.