Cysteamine works by reducing the amount of cystine (an amino acid) in the body. Cysteamine is used to treat nephropathic cystinosis (NEF-roe-PATH-ik SIS-tin-OH-sis), a rare genetic condition that causes a build-up of cystine in the kidneys and other organs. Too much cystine can cause kidney failure or other medical problems. The Cystagon brand of this medicine is for use in adults and children. PROCYSBI is another brand of cysteamine that is for use in adults and children who are at least 6 years old. Cysteamine may also be used for other purposes not listed in this medication guide.
Procysbi (cysteamine) is a prescription drug, which is used for the treatment of a rare genetic disorder called nephropathic cystinosis. The disease occurs when cystine is accumulated in the kidneys and other organs. Procysbi medicine is used for adults and children six years of age and older.