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Recommendations issued by the Committee of Experts on the Classification of Medicines as Regards their Supply are available in the Search tab of the Melclass databaseDatabase.

If you know the Anatomical Therapeutic Chemical (ATC) classification (i.e. the classification of active ingredients of medicinal products according to the organ or system on which they act and their therapeutic, pharmacological and chemical properties) code of the active ingredient you are interested in, you can select the corresponding ATC code select it in the “Select ATC” ‘Select ATC’ search - bar (Filters section) and then click on Search‘Search’. You can either scroll down the list of ATC codes or type the first few characters to quickly find the active ingredient you are looking for.

If you know the International Non-proprietary Name (INN) i.e. the unique and universally available designated name of the active ingredient you are interested in, you can select the corresponding INN it in the “Select INN” ‘Select INN’ search - bar (Filters ‘Filters’ section) and then click on Search‘Search’. You can either scroll down the list of INNs or type the first few characters to quickly find the active ingredient you are looking for.

If you do not know the ATC code or the INN of the active ingredient of interestyou are looking for, you can consult find them in the ATC/DDD Index that is available on the website of the WHO Collaborating Centre for Drug Statistics Methodology (URL: http://www.whocc.no/atc_ddd_index/ ).