The invention relates to the compound of or its pharmaceutical acceptable salts, as well as polymorphs, solvates, enantiomers, stereoisomers and hydrates thereof. The pharmaceutical compositions comprising an effective amount of compounds of formula I, and methods for treating or preventing neuromuscular disorders and neurodegenerative diseases may be formulated for oral, buccal, rectal, topical, transdermal, transmucosal, intravenous, or parenteral-administration, or syrup, or injection. Such compositions may be used to treatment or management of neuromuscular disorders and neurodegenerative diseases such as Parkinson's disease, scleroderma, restless leg syndrome, hypertension and gestational hypertension.