A dry lump-free combination of all ingredients except the stearic acid and Cab-O-Sil is blended for 15 min. Add the stearic acid and Cab-O-Sil and blend for an additional 10 min. Compress. Physical Properties: Mean Tablet Weight (n=20)---586 mg Mean Hardness---7.5 kg Friability---0.47% Disintegration Time (purified water)---2.7 min