A good manufacturing practice (GMP) is one that conforms to the guidelines set by the regulatory agencies that control authorization and licensing for the production and sale of food, beverages and active pharmaceutical products.
A product that conforms to GMP guidelines is considered to be of high quality and will pose no risk to consumers or the general public. The GMP guidelines do not lay out specific instructions for how to manufacturer a product; rather, they list general principles that must be observed during the manufacturing process. It is up to the individual manufacturer to decide how to set up its manufacturing system in order to best conform to the guidelines.