AVICEL® SMCC HD90 is silicified microcrystalline cellulose, a co-process excipient comprising microcrystalline cellulose and fumed silicon dioxide. AVICEL® SMCC HD90 is used as a tablet excipient in pharmaceutical and dietary supplement formulations. The integration of microcrystalline cellulose and fumed silicon dioxide at the particle level enhances AVICEL® SMCC HD90 functional performance such as improved flow and processing compared to a blend of the individual components. With its median particle size and increased bulk density, AVICEL® SMCC HD90 helps improve formulation powder flow for better blending and consistent tablet and capsule weight. The enhanced compactibility and hydration character of AVICEL® SMCC HD90 aids in the manufacture of tablets with robust mechanical strength and disintegration properties. Its controlled particle size distribution and spherical morphology allows for uniform blending and makes its well-suited for direct compression.