Hepatic Insufficiency (Liver Problems): No specific dose adjustments are required, though the liver stores B12, so patients with severe liver disease must be monitored
Its ability to be delivered through multiple routes may stem from a possible affinity for a peptide transporter, hPepT1, that occurs in the gastrointestinal tract.3 Researchers have also administered KPV topically or transdermally through technologies such as ionophoresis, which uses small electrical currents to drive the medication through the skin.4 There are even battery-integrated patches that use this technology.5 That being said, subcutaneous injection is likely the most rapid form of KPV drug delivery for systemic benefits, as well as the form you have the best chances of getting for your own use
Bacteriostatic Water for Injection, USP [Package Insert]
"Anemia | NHLBI, NIH"
Individuals who choose to take glutathione long term should follow recommended dosages and maintain regular medical guidance if needed
Guo Zengxi, Chief Pharmacologist of Traditional Chinese Medicine at Zhejiang Institute for Food and Drug Control