The IV (intravenous) method of administration allows much higher doses of glutathione to enter the cells than would otherwise be possible by dietary modification or oral supplements
Medications and Toxic Substances: Side effects from chemotherapy drugs, radiation, and exposure to toxins like lead, mercury, or strong household cleaners can damage nerves, leading to polyneuropathy
TB-500 works more broadly on actin regulation and systemic tissue remodeling
For context, the same quality concerns apply when choosing a compounding pharmacy for GLP-1 medications
Of course, improper use of IV equipment, especially if it is not sterile, can transmit a wide variety of infectious agents, such as HIV and hepatitis