Colchicine, para-aminosalicylic acid and heavy alcohol intake for longer than two weeks may produce malabsorption of Vitamin B12
Mechanisms of disease: metabolic effects of growth hormone and insulin-like growth factor 1
In the future, priority should be given to advancing clinical trials, optimizing injectable formulations and administration regimens, addressing environmental and cost issues in production, and strengthening synergistic research with other preparations to enhance its application value and promote the leap from scientific research to clinical practice
Azelaic acid doesn't affect collagen production so youre not going to see fewer fine lines
While we have been overwhelmed with inquiries, we would like to note that our current knowledge is limited to the details provided in the linked article
In short, B12 injections restore these pathways so the body can generate energy from fats and proteins effectively