core medicine glutathione Cata-Kor NMN Supplement – 4-in-1 NAD Supplement with Quercetin | TMG Non Caffeine Cellular Energy Supplement

Glutathione is an antioxidant produced in the body through enzymatic reactions, using the amino acids cysteine, L-glutamic acid and glycine

Actions of the various ingredients include thinning of mucus and phlegm, increased production of glutathione, gut flora support (a healthy microbiome supports good general immune function), downregulation of the production of various inflammation-promoting signals including NFkappaB (also a target of MSM!), increased blood flow to the spleen resulting in the release of various white cells of the immune system and stimulation of those cells

Its not RBD

Cracking of the skin (fissures) can occur