Zhanglang;Blatta Sources:The drug is the body of Blatta orientalis L.(family Blattidae),habitating in kitchen,distributed in the most part of China. Constituents:The crust contains sclerotin,chitin and wax.The muscle contains amino acid.The digestive tract contains digestive enzymes,blattic acid. Actions and Indications:It is used to remove blood stasis and mass,eliminate hematoma and toxic materials,for the treatment of pain of pharynx and larynx,tonsillitis,cirrhosis of the liver,ascites,dysuria,snake or insect bite,acute skin infection.