Demonstrate whether or not Nuedexta can improve speech and swallowing difficulties in patients with ALS (Amyotrophic Lateral Sclerosis).

Total of 5 study visits over a 4 month period.

Participation required diagnosis of familial or sporadic ALS (defined as meeting the possible, laboratory-supported probable, probable, or definite criteria for a diagnosis of ALS according to the World Federation of Neurology El Escorial criteria).