The drug is also prohibited for use in competition by most equestrian organizations, including the FEI, which considers it a class A drug. See also
Levallorphan
Nalbuphine
Nalfurafine
Nalorphine
Xorphanol

Notes


== References ==
See also
Posterior polymorphous corneal dystrophy (for the condition previously referred to as CHED1)
Corneal dystrophy


== References ==