The US Food and Drug Administration has approved a new drug for amyotrophic lateral sclerosis, a rare disease that attacks and kills the nerve cells that control voluntary muscles. In a Phase 2 trial, the drug Relyvrio (sodium phenylbutyrate and /taurursodiol), showed an ability to slow the rate of neuromuscular decline. Moreover in a follow-up study, it extended patient survival compared with a placebo.
