Amylyx Pharmaceuticals, Inc.’s Relyvrio (sodium phenylbutyrate and taurursodiol) marks a milestone as the first new US Food and Drug Administration approval of a drug for amyotrophic lateral sclerosis (ALS) in five years, but it could spark a debate over cost and cost-effectiveness due to its six-figure price tag and lingering uncertainty around its efficacy.
The FDA approved Relyvrio on 29 September with a broad label for ALS in adults, based on data from the...







