Excipient Selection Criteria

Excipient selection criteria establish systematic approaches for identifying inactive ingredients supporting pharmaceutical formulation stability, manufacturability, and therapeutic efficacy. Excipient functionality including solubility enhancement, taste masking, and sustained-release characteristics guide selection. Compatibility studies confirm excipients do not interact chemically or physically with active ingredients during manufacturing and storage. Regulatory classification as Generally Recognized As Safe or novel excipients influences approval pathways and documentation requirements.

Supply chain reliability and cost considerations influence excipient selection balancing quality requirements with economic feasibility. Multi-source excipient qualification ensures supply continuity and competitive pricing. Genotoxicity and toxicology studies for novel excipients or new indications establish safety margins. Regulatory submissions provide comprehensive excipient characterisation including sources, manufacturing controls, and specifications. Emerging excipients derived from plant sources require agricultural sustainability assessment. Formulation development iteratively evaluates multiple excipient combinations optimising final product properties.