Additional Information Additional information about Blatta Orientalis Blatta Orientalis is different from Blatta Americana in its clinical actions?: Blatta Americana is indicated in jaundice, dropsy while blatta orientalis in respiratory diseases/asthma source?(latter prepared from American cockroach). Blatta Orientalis therapeutic range of actions as per Boericke Materia Medica A remedy for asthma. Especially when associated with bronchitis. Indicated after arsenic when this is insufficient. Cough with?dyspn_a?in bronchitis and phthisis. Acts best in stout and corpulent patients. Much pus-like mucus.