These skip the middle man (doctors visits) and cut down costs for the patient
In the UK, intramuscular (IM) administration is standard practice for hydroxocobalamin, though subcutaneous (SC) may be used if specifically advised by your healthcare provider and following appropriate training
Patients with conditions like chronic fatigue syndrome or fibromyalgia might be interested in exploring the use of glutathione in their management plans, in conjunction with their healthcare provider's guidance It is important, however, for both patients and prescribers to note that while there is anecdotal and initial scientific support for these uses, the established evidence is limited, and further research is required to fully understand the efficacy and safety of glutathione in these contexts
10.1016/S0891-5849(98)00127-0 Free Radic
[5] In any research context it should still be framed research-use-only
doi: 10.1053/j.ajkd.2018.03.022 107 HongQZhangLFuJVergheseDAChauhanKNadkarniGNet al