Zenvia is a medication by Avanir Pharmaceuticals currently in development for the treatment of pseudobulbar affect. This neurological disorder is characterized by involuntary crying, uncontrollable episodes of crying and/or laughing, or other emotional displays. Zenvia contains
dextromethorphan and quinidine in both 30/10 mg and 20/10 mg formulations. Quinidine is a
CYP2D6 inhibitor which prevents the metabolization of DXM to
DXO. This results in increased bioavailability of dextromethorphan. Zenvia will potentially be approved by the FDA as a prescription drug in the fourth calendar quarter of 2010.