Ciraparantag TFA is an inhibitor of thrombin and factor Xa. Ciraparantag is a broad-spectrum reversal agent for anticoagulants, including unfractionated heparin, low-molecular-weight heparin, and certain direct oral anticoagulants.

Ciraparantag TFA is a small synthetic and cationic molecule that binds direct Xa inhibitors, direct thrombin inhibitors, and unfractionated and low molecular weight heparin (LMWH) through non-covalent hydrogen bonds and charge-charge interactions [3].