This commentary introduces the Medical Abortion Reporting of Efficacy (MARE) guidelines as a supplement to CONSORT and STROBE. The goal of the recommendations is to standardize early medical abortion efficacy reporting to facilitate comparison of outcomes between studies and to enrich the ability for data synthesis from different studies to create evidence-based guidelines. We hope that abortion researchers as well as funders of abortion research will support the MARE supplements to CONSORT (MARE-C) and STROBE (MARE-S). We invite the editors of women’s health scientific journals to include the MARE supplements in author guidelines.