All of the ingredients except the magnesium stearate are passed through a #30 mesh (USSS) mesh screen and are blended for 10 minutes prior to adding the magnesium stearate which has been passed through a #40 mesh screen. hereafter the combined ingredients are blended for 60 minutes and compressed tablets are prepared with a Manesty Betapress using a 0.281 flat face beveled edge punch and die set.