blend all the ingredients, except magnesium stearate and talc, for 15 min. add the magnesium stearate and talc and blend for an additional 10 min. recompress the tablets using the slugging technique. compress. mean tablet wt (n=20)-770 mg mean hardmess-9.5 kg friability-0.30% disintegration time (purified water)-1.5 min