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(11) Elena M Khvatova, Victor N Samartzev, Pavel P Zagoskin, Igor A Prudchenko, and Inessa I Mikhaleva (2003) Delta sleep inducing peptide (DSIP): effect on respiration activity in rat brain mitochondria and stress protective potency under experimental hypoxia Peptides, 2003 Feb, Volume 24 (Issue 2), Pages 307-11
Glutathione is also poorly absorbed so most oral glutathione supplements are not as effective, however, you can work around this by supplying the body with the nutrients and protein required for glutathione production, or boost your glutathione levels with a direct IM shot or IV infusion
Lamberts L-Glutathione Complex is a supplement which provides l-glutathione, one of the best known powerful antioxidant
Contains antioxidant of vegetables and fruits
The problem: very short half-life (~50 minutes) and 3 daily injections at meals , an extremely impractical regimen