What are withdrawal periods and residue limits for food-producing animals?

A withdrawal period is the minimum time required between the last administration under authorised conditions and production of food such as meat, milk or eggs for human consumption. It is linked to the product, species, dose, route and jurisdiction; it must not be guessed from another market. Maximum residue limits and consumer-safety assessments may support authorisation. Buyers need verified local wording and must carry it consistently through labels, training and distribution materials.