Current Neuropharmacology , 16(1), 6271
In vivo studies have shown that intravenously administered NAC reaches high concentrations in organs such as the lungs (320 M), kidneys (250 M), heart (170 M), and liver (100 M), with peak concentrations in human red blood cells reaching 200 M
Supplementation with L-cysteine has been shown to not only increase glutathione levels, but to also upregulate the expression of vitamin D binding proteins, receptors, and enzymes that results in increased vitamin D levels
Those questions require a different level of scientific evidence. Ultimately, Khaldi says that good science is about asking questions and following the evidence: Patients deserve treatments supported by robust human clinical research, transparent data, and high-quality manufacturing