Yes, Fondaparinux Sodium injections are not taken together with a few selected anticoagulants, thrombolytics, antiplatelets/Mifepristone, other heparins, NSAIDS, Salicylates and a host of other medicines.
When taken together, these drugs may have serious interactions. Always consult your doctor before taking any medicine if you are on the anticoagulant Fondaparinux.