The List of World Health Organization Essential Medicines is a model list of essential medicines created by the World Health Organization. The WHO Model Lists of Essential Medicines has been updated every two years since 1977.
The current versions are the 17th WHO Essential Medicines List and the 3rd WHO Essential Medicines List for Children. The 17th edition for adults and the third edition for children were released in March 2011.
Following are the downloadable PDF files for your reference: