This is a chemistry reason to separate them, not just a marketing rule
L-Glutathione, a well-known antioxidant, helps promote glowing, healthy-looking skin while protecting your cells from free radicals
a , Growth curve analysis of WT (light blue circles), gsh2 (blue squares or circles), and gsh2::GSH2 (light blue squares) strains grown in rich or minimal medium with and without methionine (Met), cysteine (Cys), or ascorbic acid (AA) supplementation at the indicated concentrations
IGF-1 signaling can promote cell proliferation and block programmed cell death, effects that could theoretically support tumor growth if cancer cells are present
doi:10.1002/14651858.CD010287.pub3
Handling and Storage Recommendations Store at -20C immediately upon receipt