Your solution
Microcrystalline Cellulose with CMC
Co-processed Microcrystalline Cellulose with Carboxymethyl-cellulose
Microcrystalline Cellulose with CMC
Cellulose derivative. Excellent suspending agent with thixotropic properties. Does not increase viscosity while preventing sedimentation. Protective polymer needed in case of large ion-load or pH < 4.