Always check with a doctor before getting any shots, especially if youre already taking nutritional supplements.
Activation of Nrf2 and a subsequent induction of GCL have been reported for various oxidants and electrophiles such as DEM, H 2 O 2 , quinones, 4-hydroxynonenal, methyl mercury, arsenicals, and plasmonic gold nanoparticles (Zhang et al
10.1111/lam.13543 450 Valles-ColomerM.FalonyG.DarziY.TigchelaarE
Biomed Pharmacother (2022) 153:113528
It acts quickly, but as noted above its efficacy evidence for whitening is limited and it carries regulatory cautions so it should only be given by a qualified doctor after assessment
For the latter two, the decision to attempt retreatment depends on the extent of the reaction and if there are therapeutic alternatives