4.5.2 Mechanism of action in dry eye disease Spermidine helps regulate the immune systems balance, crucial in conditions like DED, where inflammation plays a key role
There are chronic inflammatory changes and macrophages
Wang C, Feng Q, Lu H et al (2024) Metabolic regulating enhanced immunological activating nanocomposites for tumor microenvironment normalization and immunotherapy
While copper is an essential nutrient, oral copper supplements do not concentrate enough in the skin to trigger collagen production or repair
On the importance of selenium and iodine metabolism for thyroid hormone biosynthesis and human health
In a randomized clinical trial involving older adults, GlyNAC supplementation improved glutathione status while also improving markers of oxidative stress, inflammation, mitochondrial function, muscle strength, and walking speed.57 58 Additional studies have reported improvements in several other measures associated with healthy aging, though the overall body of evidence remains relatively small compared with more established uses of NAC.34 Pure Encapsulations delivers 1,800mg each of NAC and glycine per serving, making it one of the highest-dosed products in this guide