Description and Brand Names

Drug information provided by: Merative, Micromedex®

US Brand Name

  1. Firdapse
  2. Ruzurgi


Amifampridine is used to treat Lambert-Eaton myasthenic syndrome (LEMS), a rare autoimmune disease, wherein the immune system attacks the connection between the nerve and muscle (neuromuscular junction) and blocks the ability of the nerve cells to send signals to the muscle cells, leading to muscle weakness of the arms or legs.

This medicine is available only with your doctor's prescription.

This product is available in the following dosage forms:

  • Tablet