WHO maintains its Model Lists of Essential Medicines and Essential Medicines for Children as part of the campaign for universal health coverage around the world. Currently in the 22nd and 8th editions, respectively, the lists are available to national and regional governments to help them create and update national essential medicines lists to guide procurement and supply of essential medicines at the national and local levels.

WHO promotes universal access to health products by reinforcing their selection and supply chains, supporting research and development for new health projects, and working to remove barriers to health services, particularly in low-income areas.

WHO works with governments to create strategies for measuring, monitoring and managing medicine prices that fit regional contexts and health care systems. This includes supporting countries to create evidence-based policies, building tools to monitor and measure programs, and promoting oversight of health care delivery.