is glutathione iv safe Detox: It Right? What Is Glutathione? — Purifi

Some of it very promising

The precision that makes the laboratory result elegant is precisely what makes naive extrapolation to a bottled serum unreliable

While the NIH does not specify a tolerable upper intake level for vitamin B12, a study published in the JAMA Network Open found that high intakes of vitamin B12, such as from daily supplementation of 25 micrograms or higher, increased the risk of bone fracture [3] [4]

11,20 Most studies aimed to increase GSH concentration have used glutathione precursors, such as N -acetylcysteine or sodium salts of GSH, 2 based on the assumption that oral reduced GSH is poorly absorbed and/or oxidized in the gastrointestinal tract

If you want a deeper look at how collagen supports training, our guide on Is Collagen Good for Recovery