Intended for healthcare professionals

Letters Progest—erone, ogen, in?

Which is it?

BMJ 2009; 339 doi: (Published 31 December 2009) Cite this as: BMJ 2009;339:b5142
  1. M Joy Spark, pharmacy lecturer1
  1. 1LaTrobe University, Bendigo Campus, VIC 3550, Australia
  1. j.spark{at}

    Loder’s editorial refers to combination oestrogen-progestin contraceptives but in the concluding sentences implies that levonorgestrel and norethisterone are types of progesterone.1 Stephenson in her letter refers to the etonogestrel containing implant as a progesterone implant.2 Progesterone appears to have been used as a synonym for progestin. The British …

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