Essential Lean Protein Sources in the U.S
One study found that utilizing a vitamin C supplement helped increase glutathione levels in red blood cells by as much as 47%, while another study determined that vitamin C supplementation helped increase glutathione levels in white blood cells by as much as 18%
[DOI] [PubMed] [Google Scholar] 86.Kokot A., Zlatar M., Stupnisek M., Drmic D., Radic R., Vcev A., Seiwerth S., Sikiric P
Tatarkiewicz K, Belanger P, Gu G, Parkes D, and Roy D
If you are taking a standard, non-liposomal pill, the timing might not matter as much because the absorption is so low
Adequate protein intake (collagen helps!) and ensuring you arent nutrient-deficient