Simvastatin in Relapsing Remitting Multiple Sclerosis (RRMS) Patients Using Avonex Compared to Placebo

Patient with relapsing remitting multiple sclerosis taking avonex are included in this double blind randomized control trial. Simvastatin is compared to placebo. end points of edss , total attack, new enhancing lesion and newt2 lesion in mri is evaluated as end point.

Inclusion Criteria:

1. edss<5
2. >=1 attack in last year

Exclusion Criteria:

1. >2 attacks in study
2. drug complication