Overview Comparing Tolerability and Absorption of Racemic and R-lipoic Acid in Progressive Multiple Sclerosis Status: Completed Trial end date: 2019-01-25 Target enrollment: Participant gender: Summary This is a three-week crossover study that will compare how the body absorbs and tolerates two different forms of lipoic acid: R form and racemic form. Phase: Phase 1 Details Lead Sponsor: Rebecca SpainTreatments: Thioctic Acid