To the Editor.

The recent article entitled “Contraception and Adolescents” by the AAP's Committee on Adolescence was timely and comprehensive and should provide pediatricians with much guidance on preventing unplanned teen pregnancies.1 However, there has been a recent advance in emergency contraception. Progestin-only emergency contraception using levonorgestrel, .75 mg (Plan B or 20 Ovrette) within 72 hours and repeated in 12 hours, results in an 88% reduction in pregnancies, slightly better than Yuzpe estrogen/progestin dosing with significantly less nausea (23% vs 50%) and less vomiting (6% vs 23%).2 The contraindications to progestin-only emergency contraception are pregnancy and undiagnosed abnormal genital bleeding. Of interest, in the most recent WHO trial, the earlier the doses were given, the more effective both the progestin-only and the Yuzpe regimens were.2 This is in contrast to a previous meta-analysis that found no difference when doses of the Yuzpe regimen were initiated on...

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