glutathione and n-acetylcysteine The Central Nervous System Modulatory Activities of N-Acetylcysteine: A Synthesis of Two Decades of Evidence Effects of N-acetylcysteine, oral glutathione
Description
Study shows that the patient with insulin resistance is fed with cysteine and glycine, a rich diet to raise glutathione level for two weeks, it also helps to decrease insulin resistance

B12 isn't a weight-loss medication

Veterinarians may train pet owners to administer certain injectable vitamins at home, particularly for pets requiring frequent doses such as B12 injections
Its absolutely crucial for the making of DNA and RNA, the genetic material in all cells