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Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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The combined pill prevents pregnancy by:

  • suppressing ovulation - mediated by inhibiting GnRH
  • altering the cervical mucus making it less penetrable by spermatozoa
  • interfering with transport of ova in the fallopian tube
  • inducing atrophic change in the endometrium so as not to be conducive to implantation

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