Author(s): TM Hyers, HG Shetty, IA Campbell Format Abstract The optimum duration of anticoagulation following idiopathic deep venous thrombosis and pulmonary embolism is controversial. The JRCPE is delighted to publish a debate written by three international experts. Dr Shetty and Dr Campbell recommend that three months’ anticoagulation is sufficient, while Professor Hyers recommends anticoagulation for longer than three months. Keywords Anticoagulant therapy, idiopathic venous thromboembolism Declaration of Interests No conflict of interests declared. PDF https://www.rcpe.ac.uk/sites/default/files/controversies.pdf Journal Keywords: Anticoagulant therapyidiopathic venous thromboembolism