it has a clinically relevant ingredient list and two (self-funded) scientific studies, one of which was generally positive
Huang Y, Zhu M, Ji M, Fan J, Xie J, Wei X, Jiang X, Xu J, Chen L, Yin R, et al
B12 injections are also used to treat people with malabsorption (gastrointestinal conditions that prevent proper absorption of B12 from the gut), for example, people with atrophic gastritis (stomach inflammation) and intrinsic factor deficiency (pernicious anemia) or those who have undergone surgical procedures such as gastrectomy or small bowel resection (stomach or intestine removed), autoimmune diseases, etc
Healthy Skin, Hair, and Nails You dont often think of Vitamin B12 being important for skin health but low B12 levels are one of a number of factors that can cause vitiligo, acne, rosacea, and dermatitis