Types of progestogens in combined oral contraception: effectiveness and side-effects

  • Lawrie T
  • Helmerhorst F
  • Maitra N
 et al. 
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The progestogen component of combined oral contraceptives (COC) has undergone changes since it was first recognised that it's chemical structure could influence the spectrum of minor adverse and beneficial effects. The major determinants of effectiveness are compliance and continuation which may be influenced by cycle control and common side effects. The rationale of this review is to provide a systematic comparison of COCs containing the progestogens currently in use worldwide.

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  • Theresa A Lawrie

  • Frans M Helmerhorst

  • Nandita K. Maitra

  • Regina Kulier

  • Kitty Bloemenkamp

  • A Metin Gülmezoglu

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