Phillyrin is an endophytic fungal isolate with anti-obesity activity. It can be produced by Colletotrichum gloeosporioides, an endophytic fungus isolated from Forsythia suspensa. It can also be prepared directly from Forsythia suspensa. Phillyrin is an endophytic fungal isolate with anti-obesity activity. It can be produced by Colletotrichum gloeosporioides, an endophytic fungus isolated from Forsythia suspensa. It can also be prepared directly from Forsythia suspensa.