glutathione or vitamin c which is better and Together: Why It Works – Pure Nutrition GMP certified Glutathione & Vitamin C Body
Description
Arch Toxicol 2016

Have you had a homocysteine blood test and a methylmalonic acid - MMA - that would show whether you were low at cellular level

More recent interest has focused on its potential neuroprotective, stress-adaptive, and metabolic effects

80 A means of resolving this situation is provided by studies which have shown that malabsorption of vitamin B 12 induced by metformin can be reversed by oral supplementation of vitamin B 12, even whilst metformin treatment is continued