It's a trace mineral involved in several enzyme systems that help process sulfur-containing compounds, including sulfites.47 Because NAC itself is a sulfur-containing molecule, there's a reasonable biological rationale for pairing the two ingredients
[1] Supplied as a pure, lyophilized peptide, GSH can be accurately reconstituted for in vitro studies investigating oxidative pathways, thiol-dependent enzymatic activity, and protein redox regulation
It's important for vitamin B12 or folate deficiency anaemia to be diagnosed and treated as soon as possible
The AEUG group showed higher values of low-density lipoprotein cholesterol (LDLc) and homeostatic model assessment index-insulin resistance (HOMA-IR) than controls, and higher values of insulin than the other two groups
In the second subgroup (ALC add-on vs the same background drug), Gavrilova et al 19 observed AEs in 35% with ALC add-on versus 45% with antidepressant alone, and Ramezani et al 20 reported AEs in three patients (1 in ALC + sertraline, 2 in sertraline + placebo)
For more details, take a look at our post on how fast a B12 shot works