Repurposing of already approved drugs has been explored, for example, disulfiram, a drug traditionally used to treat alcohol dependence, can lower cystine levels in cystinotic cells, but has side effects that limit its use in cystinosis [151, 153]
This article explains the benefits, uses, and risks of vitamin B12 injections, as well as recommended intake levels
But, if dietary changes dont resolve the vitamin deficiency, then a doctor may recommend supplementation through pills or injections, depending on the cause of the deficiency
However, it did improve anxiety symptoms in the patients.[ref] A meta-analysis of clinical trials using 900 2700 mg/day showed that NAC may improve hearing loss (noise-induced).[ref] Keep in mind that these studies involved patients who were likely to have increased glutathione use