<unk>  is a histone deacetylase inhibitor that is FDA approved for the treatment of chronic management of patients with urea cycle disorders involving deficiencies of carbamylphosphate synthetase (CPS), ornithine transcarbamylase (OTC), or argininosuccinic acid synthetase (AS).   Common adverse reactions include metabolic acidosis, hypoalbuminemia, anemia, amenorrhea , irregular periods.
Sodium phenylbutyrate
Tidiacic arginine
Methenamine mandelate
Levocarnitine 
Glucosamine
Tuaminoheptane
Acetylleucine
Aurothioglucose