- Absence of interaction of fondaparinux sodium with aspirin and piroxicam in healthy male volunteers. Ollier, C., Faaij, R.A., Santoni, A., Duvauchelle, T., van Haard, P.M., Schoemaker, R.C., Cohen, A.F., de Greef, R., Burggraaf, J. Clinical pharmacokinetics. (2002)