Taking levothyroxine the same way every morning, with water, before anything else, gives the most consistent results
Also contains: Glycerol, water, soy lecithin, rapeseed lecithin, natural flavour, pectins, citric acid
For example, dietary vitamin C supplementation was shown to relieve oxidative stress in STZ-induced diabetic aged rats by minimizing peroxidation levels and enhancing glutathione peroxidase activity in the lens [97]
In reality, most vitamin B12 deficiencies result from diet, aging, stomach problems, or medication use rather than cancer
If your glutathione levels are low, you might observe discolorations or patches that just weren't there before