Overview Effectiveness of 3,4-Diaminopyridine in Lambert-Eaton Myasthenic Syndrome Status: Completed Trial end date: 2015-07-01 Target enrollment: Participant gender: Summary Hypothesis: 3,4-Diaminopyridine base (3,4-DAP) improves Lambert-Eaton Myasthenic Syndrome (LEMS)-related weakness. Phase: Phase 2 Details Lead Sponsor: Jacobus PharmaceuticalTreatments: 3,4-diaminopyridine4-AminopyridineAmifampridine