Kayu angin is a liken that grows in Indonesia forests and commonly used to cure diarhea, stomachache, and cough. Based on the densitometric method, yellow kayu angin (KAK) contained 4.09 percent (from the dry weight) of major substance (substance A), and 2.99 percent of major substance (substance B) from green kayu angin (KAH). Previously, these substances were identified as uric acid which inh…