http://apic.cefic.org/pub/guidelinesupplierqualification_200912_final.pdf

Manufacture of Medicinal Products and the Active Pharmaceutical Ingredients (APIs) used as starting materials in the production of these products is subject to strict good manufacturing practice regulations that are designed to ensure their quality, safety and efficacy. This ensures that patients worldwide and at any time can have confidence in the quality, safety and efficacy of medicines.