This overview contains all of the substances listed as drug precursors (WVMC category drugs). These compounds can create narcotics.

The 'WVMC category drugs' field on the 'Lists' tab of the substances screen indicates to which group the substance belongs.

More information on the legislation regarding drug precursors can be found at the following link: Drug precursor legislation.

When a new list is available, it is published in the ITIS newsletter, and you can retrieve and process it by clicking the 'Import drug precursor' function.