Riluzole is indicated in the U.S. for the treatment of patients with amyotrophic lateral sclerosis (ALS). The commercially available dosage form is a 50mg oral tablet. This expanded access protocol (EAP) is designed to provide access to a dissolving tablet formulation of riluzole designed for sublingual (SL) administration, in patients with ALS who, in the opinion and clinical judgement of the treating physician, would benefit from treatment with BHV-0223.