Overview Prevention Strategy for Pre-Menopausal Women at High Risk for Development of Breast Cancer Status: Completed Trial end date: 2017-07-01 Target enrollment: Participant gender: Summary The investigators will study the effect of 12 months of SDG (Brevail) vs placebo on women at increased risk for development of breast cancer. Phase: Phase 2 Details Lead Sponsor: Carol Fabian, MDCollaborator: Lignan Research Inc.Treatments: Secoisolariciresinol