The web version of the NOAH Compendium of Data Sheets for Animal Medicines includes product data sheets for animal medicines. This information is accessible free of charge on the web at The Compendium is also produced as a book which is updated annually.

The Compendium also gives prescribers and users of animal medicines easy access to information on withdrawal periods. Use of animal medicines in farm animals is strictly controlled by European law, and requires observance of the withdrawal period.

This is the time which passes between the last dose given to the animal and the time when the level of residues in the tissues (muscle, liver, kidney, skin/fat) or products (milk, eggs, honey) falls below the Maximum Residue Limit (MRL). Until the withdrawal period has elapsed, the animal or its products must not be used for human consumption.