Article Text

Download PDFPDF
Relation between oral contraceptive hormones and blood clotting
  1. L. Poller


    Oral contraception with conventional oestrogen/progestogen preparations produces raised levels of clotting factors and increased platelet aggregation. Although these changes do not involve as broad a spectrum of clotting factors as thrombosis and the third trimester of pregnancy, they do not appear a desirable side effect and may be responsible for the increased risk of thrombosis. Oral contraception with progestogen alone does not appear to cause similar clotting and platelet changes.

    Statistics from

    Request Permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.