Complicating this further: the regulatory picture shifted significantly between 2023 and 2025
Glutathione is the master antioxidant but there are many other antioxidants which are helpful, including vitamin C, vitamin E, quercetin, beta glucans (eg from medicinal mushrooms), zinc, selenium, and others
however, in the diabetic milieu, inflammatory signaling persists, hindering the progression of healing and exacerbating oxidative stress and cellular dysfunction (Wang G
Vitamin B12 injections may be recommended for men experiencing low energy, fatigue, or symptoms associated with vitamin B12 deficiency
therefore it works better for weight loss is a reasonable hypothesis, not a proven fact