There is no such thing as over dosage in whitening supplements
However, due to GLP-1s short-term metabolic effects, agonists are utilized as they mimic the effects of GLP-1 long-term, such as binding the receptors that GLP-1 normally binds to, and have shown promising results in treating type 1 diabetes mellitus as well ( Mohandas et al
Antioxid Redox Signal 15:15831606 Zachara BA, Koterska D, Manitius J, Sadowski L, Dziedziczko A, Salak A, Wasowicz W (2004) Selenium supplementation on plasma glutathione peroxidase activity in patients with end-stage chronic renal failure
Some research suggests that arginine may benefit health, for example by relieving chest pain, improving erectile dysfunction, and reducing high blood pressure
This means even if you take a high dosage, only a small fraction may actually reach your cells
The Impact of Oxidative Stress in Male Infertility