Open-Label Extension Study to Evaluate the Safety, Tolerability and Activity of Oral Fampridine-SR in Patients With Multiple Sclerosis Who Participated in the MS-F204 Trial

Inclusion Criteria:

Patient must have been previously enrolled in the Acorda Therapeutics MS-F204 study and received either Fampridine-SR or placebo
Patient with clinically defined multiple sclerosis (the diagnostic criteria based on: McDonald WI, et al. Recommended Diagnostic Criteria for Multiple Sclerosis: Guidelines from the International Panel on the Diagnosis of Multiple Sclerosis. Annals of Neurology. 2001; 50: 121-127)
Patient must be at least 18 years of age. Any patient who is now over the age of 70 must be in good overall health in the judgment of the investigator
Patient must be of adequate cognitive function, as judged by the Investigator
Patients who are women of childbearing potential must have a negative urine pregnancy test at the screening visit

Exclusion Criteria:

Female patients who are either pregnant or breastfeeding.
Women of childbearing potential who are not using a specified birth control method
Patients discontinued prematurely from the MS-F204 study
Patients with a history of seizures or with evidence of past, or possible epileptiform activity on an EEG
Patient with either a clinically significant abnormal ECG or laboratory values at the MS-F204 EXT screening visit
Patient with severe renal impairment
Patient with angina, uncontrolled hypertension, clinically significant cardiac arrhythmias, or any other clinically significant cardiovascular abnormality, as judged by the Investigator
Patient with a known allergy to pyridine-containing substances or any of the inactive ingredients of the Fampridine-SR tablet
Patient who has received an investigational drug (other than Fampridine-SR or placebo under MS-F204 study) within 30 days of the MS-F204EXT screening visit or a patient who is scheduled to enroll in an investigational drug trial at any time during this study
Patient who has a history of drug or alcohol abuse within the past year