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Classification of progestins used in combined oral contraceptive pills

Classification of progestins used in combined oral contraceptive pills
First generation
  • Norethindrone acetate
  • Ethynodiol diacetate
  • Lynestrenol
  • Norethynodrel
Second generation
  • dl-Norgestrel
  • Levonorgestrel
Third generation
  • Desogestrel
  • Gestodene
  • Norgestimate
Unclassified
  • Drospirenone
  • Cyproterone acetate
Reproduced with permission from: Reust CE, Espinoza SA, Ruplinger J, Swofford S. What is the approach to intermenstrual bleeding in a woman taking a combined oral contraceptive? Evidence-Based Practice 2012; 15:29. Copyright © 2013 Family Physicians Inquiries Network.
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