The subject invention provides for methods of reducing the relapse rate and/or reducing the accumulation of physical disability in a relapsing-remitting multiple sclerosis human patient, the method comprising orally administering to the patient a daily dose of 0.6 mg laquinimod. The subject invention also provides for pharmaceutical oral unit dosage forms of 0.6 mg laquinimod for use in reducing the relapse rate and/or for use in reducing the accumulation of physical disability in a relapsing-remitting multiple sclerosis human patient.text