Inosine 5'-Monophosphate to Raise of Serum Uric Acid Level in Patients With Multiple System Atrophy: a Multi-center, Randomized Controlled, Double Blind, Parallel Assigned Clinical Trial

1\) Subjects are initiated with 1 tablet (500mg of inosine 5'-monophosphate per one tablet) two times per day, and then titrated up by 1 tablet per every visit up to visit 2, i.e. increased up to 2 tablets two times a day by week 6. A maximum limit of elevated serum uric acid level is 9 mg/dL, so that reducing dose of administration may be considered in case of being way over the top of limited level.

2\) Subjects are initiated with 1 tablet (500mg of placebo tablet with inactive therapeutic effect) two times a day, and then titrated up by 1 tablet per every visit up to visit 2, i.e. increased up to 2 tablets two times a day by week 6. A maximum limit of elevated serum uric acid level is 9 mg/dL.