Menstrual problems and contraception in women of reproductive age receiving oral anticoagulation.

Background: Oral anticoagulation is associated with increased bleeding complications. The aim of this study was to assess the changes in menstrual loss and pattern in women taking anticoagulant treatment.

Study Design: Women on oral anticoagulant (OA) treatment at the Royal Free Hospital were interviewed and completed a questionnaire about their menstrual cycle before and after commencing oral anticoagulation treatment.