Vitamin B12 is a cofactor in synthesizing methionine, which is essential for protein formation.[ref] If you are deficient in B12 or folate for a long time, you can develop megaloblastic anemia
GLP-1 therapy, often used to aid in weight loss and blood sugar management, works by mimicking the effects of glucagon-like peptide-1 (GLP-1)
Plus, injections bypass the digestive system altogether, ensuring maximum efficacy for those with digestive issues or difficulty absorbing nutrients
If you follow a vegan or vegetarian diet, are over the age of 50 , or live with a digestive condition like Crohns disease or pernicious anaemia, your body might struggle to absorb B12 from your food
I started my B12 injections at the same time as the pill so don't know if they counteracted each other but I was under the impression having b12 should make periods easier