Contraception is a highly cost-effective public health intervention because it reduces the number of unplanned pregnancies. However, the provision of contraception is variable, funding for publicly provided contraception has declined and unplanned pregnancies continue to be a public health issue in the UK. Long-acting reversible contraceptives (LARCs) are deemed to be the most effective methods of contraception and increasing their uptake could reduce unplanned pregnancies. This article provides information to support general practice nurses in reducing unplanned pregnancies by promoting the use of LARCs. It explores the benefits and risks of LARCs, existing barriers to their uptake and the role of nurses in discussing contraception with patients in general practice settings.