<unk> (oral) is a renal-urologic agent that is FDA approved for the treatment of nephropathic cystinosis in children and adults.   Common adverse reactions include rash, abdominal pain, unpleasant breath smells, diarrhea, loss of appetite, nausea, vomiting, dizziness, headache, lethargy, and fever.
Cysteamine 
Carnitine
Xanthine
Aminohippuric acid
Nicotinamide
Pyruvic acid
Ethionine
Citrulline