glutathione plastry 500mg per serving – Nature's Craft Healthy Origins® L-Glutathione (Setria®) 500mg

Additionally, as an antioxidant, glutathione reduces oxidative stress in the skin, which is relevant because oxidative stress (from UV sun exposure or inflammation) can stimulate more melanin production

Bioinformatics 23, 802808

It plays a vital role in the bodys antioxidant defense system by replenishing an important antioxidant called glutathione

In relation to B12 deficiency, I look particularly at B12, folate, ferritin (or other iron results) and Full Blood Count results

J Am Chem Soc 83(23):47804784 Jhee K-H, Kruger WD (2005a) The role of cystathionine -synthase in homocysteine metabolism

It also helps promote collagen production, which can help reduce the appearance of fine lines and wrinkles