Disclosed herein are methods for decreasing kallikrein and treating or preventing thromboembolic conditions in an individual in need thereof. Examples of disease conditions that can be ameliorated with the administration of antisense compounds targeted to kallikrein include thrombosis, embolism, and thromboembolism, such as, deep vein thrombosis, pulmonary embolism, myocardial infarction, and stroke. Methods for inhibiting kallikrein can also be used as a prophylactic treatment to prevent individuals at risk for thrombosis and embolism.