A Phase 3 Study of Amifampridine Phosphate in Patients With Lambert Eaton Myasthenic Syndrome (LEMS)

Amifampridine, 30-80 mg given 3-4 times per day with a maximum single dose of 20 mg (2 x 10 mg tablets), for 2 weeks.

Matching placebo tablets administered 3-4 times a day (to the individual patient's tablet count of active at baseline) over 2 weeks.