The invention relates to the compounds of formula I and formula II or its pharmaceutical acceptable polymorphs, solvates, enantiomers, stereoisomers and hydrates thereof. The pharmaceutical compositions comprising an effective amount of salts of formula I or formula II; and methods for treating or preventing multiple sclerosis may be formulated for oral, buccal, rectal, topical, transdermal, transmucosal, intravenous, parenteral administration, syrup, or injection. Such compositions may be used to treatment of neurodegenerative diseases and psoriasis.