See why FIRDAPSE is accessible and affordable for virtually every patient.

See why FIRDAPSE is accessible and affordable for virtually every patient.

The recommended first-line therapy for patients living with Lambert-Eaton myasthenic syndrome (LEMS)1

Clinically proven to maintain muscle strength and mobility2-4

The FIRDAPSE Pregnancy Registry: In conjunction with the FDA, Catalyst Pharmaceuticals has created a registry to collect information about the safety of FIRDAPSE use during pregnancy. Enroll patients with LEMS—even those not taking FIRDAPSE—as soon as you learn of their pregnancy by calling 1-855-212-5856 or visiting www.firdapsepregnancystudy.com.

What is LEMS?

LEMS is a rare, immune-mediated neuromuscular disorder that results in progressive, debilitating muscle weakness and fatigue.5,6

About FIRDAPSE

The only FDA-approved treatment for LEMS that’s clinically proven to maintain muscle strength and improve patient reported sense of physical well-being vs placebo in clinical trials.2-4,7

Hear from Experts

Watch LEMS experts discuss LEMS pathophysiology, clinical presentation, diagnostic challenges, and treatment options in our LEMS Video Library.