An Open Label Dose Escalation Study to Assess the Safety, Tolerability, and Pharmacologic Properties of High Dose Ambroxol Hydrochloride in Adult (≥ 18 Years of Age) Subjects With MPS III

This clinical trial is studying a drug called Ambroxol Hydrochloride 30 mg tablet - 18 mg/kg/day, a drug called Ambroxol Hydrochloride 30 mg tablet - 27 mg/kg/day, and others for people with mps3 and sanfilippo syndrome. The study is currently recruiting participants at 1 location. People eligible for this study include aged 18 Years to 99 Years.