解肌透表必伍生姜；有汗表虚多伍芍药；无汗表实必伍麻黄；项强必伍葛根；太少合病多伍柴胡；除烦伍石膏；清热伍黄芩；里实腹满伍大黄；与附子同用以温阳；与参芪同用以助气；与甘枣同用扶心阳；与饴糖同用以建中；与茯苓同用治水镇悸；与五味同用以纳气；与龙牡同用以镇惊；与桃仁同用以行瘀；用药之妙莫妙于方之加减！桂枝