The reality is that that what the FDA means by safety is a matter of regulatory compliance (large scale clinical trials, manufacturing standards, etc.) not toxicity
Glutathione IV Therapy: What You Need to Know Glutathione IV therapy is an effective antioxidant treatment that helps detoxify the body, reduce inflammation, and improve skin health
At day 90, 5058% of patients in the DFO group have favorable outcomes, much higher than those in the placebo group (31%), suggesting that iron chelating therapy reduces systemic iron overload and may provide long-term benefits for patients with acute stroke
Neural Regen Res 13:373385 Legendre P (2001) The glycinergic inhibitory synapse
BPC 157-rats Specifically, BPC 157, 10 g/kg, 10 ng/kg regimens, exhibited a consistent counteracting effect (i.e., markedly reduced the bleeding time, blood loss and also counteracted: acute thrombocytopenia in rats with amputation only, in heparin-rats or warfarin-rats), prolonged APTT-, TT- values (heparin-rats), but not PT-values (warfarin-rats))
Also, the effect of lactobacillus on the natural immune response of rainbow trout was also enhanced under the effect of selenite (Yu et al., 2020)