Lumbrokinase is a fibrinolytic enzyme extracted from earthworms, with a long history of use in Traditional Chinese Medicine. Lumbrokinase works by breaking down fibrinogen, which is a protein that can accumulate in blood vessels and inhibit proper circulation. Lumbrokinase also has antithrombotic properties, helping to prevent blood cells from sticking together.Lumbrokinase is becoming a popular supplement for supporting healthy circulation and cardiovascular health. Double Wood’s Lumbrokinase supplement is quite potent and is standardized to 10,000 FU per gram.