glutathione injection is permanent infusions | Cancer treatment and therapy in Germany Glutathione Injections: Benefits, Side Effects

Not always, because better depends on your goal and how your skin reacts, and injections add more risk and more cost than a topical bottle

(Triumph Pan European Expert Panel) (October 2002)

3 Lactylation was identified on histones, playing an essential role in modulating chromatin accessibility and transcriptional activation

The model was qualified based on standard goodness-of-fit plots of predictions vs observed concentrations and weighted residuals, distribution of individual parameter estimates compared to s.c

So the practical takeaway is not oral is better or SC is better. It is: pick one route, follow the documented per-dose figure for the vial you have, and keep the route constant so that whatever you observe is not confounded by a mid-stream route change