6. Subjects with symptomatic gallstones within 6 months prior to randomization 7. Coagulopathy defined as hgb <10g/dl and platelet < 100,000/ml or diagnosis of hemophilia, factor X deficiencies or fibrinogen abnormalities 8. Subjects requiring prescription antithrombotic therapy (i.e. anticoagulant or antiplatelet agent) 9. Subjects unable to discontinue NSAIDs (non-steroidal anti-inflammatory drugs) or any other drugs with bleeding as a potential side effect during the study duration.