glutathione and its role in sulphur metabolism Sulfur diagram. The essential sulfur amino acid methionine Sulfur assimilation - Wikipedia

B12 shots can alleviate symptoms of deficiency, including memory loss and difficulty concentrating

Science 163 , 955958 (1969)

were always available to help and provide additional education when needed

Molecular aspects of lipoic acid in the prevention of diabetes complications

Certain medical conditions and medications increase B12 requirements: Long-term use of metformin (diabetes medication) or proton pump inhibitors (PPIs for acid reflux) can impair B12 absorption [13] [14] Gastrointestinal conditions such as Crohn's disease, coeliac disease, or previous gastric surgery Autoimmune conditions beyond pernicious anaemia may affect B12 metabolism When to contact your GP : If you are taking B12 supplements or receiving injections but continue to experience symptoms, request a review