Nuedexta (dextromethorphan hydrobromide and quinidine sulfate) has been approved in capsule form by the Food and Drug Administration (FDA) as the first line of treatment for uncontrolled laughing or crying, medically known as pseudobulbar affect (PBA), Avanir Pharmaceuticals Inc. announced. People with Pseudobulbar Affect may become too emotional for no apparent reason; it is a neurologic condition in which the patient experiences involuntary, sudden and frequent episodes of crying or laughing... 
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