The following adverse reaction data are based on a clinical study of bivalirudin in 13,819 patients with ACS; 4612 were randomised to bivalirudin alone, 4604 were randomised to bivalirudin plus GPIIb/ IIIa inhibitor and 4603 were randomised to either unfractionated heparin or enoxaparin plus GPIIb/ IIIa inhibitor.