No established upper limit exists for vitamin B12 intake in the UK, as confirmed by the Scientific Advisory Committee on Nutrition (SACN)
However, it is more convenient than daily injections
Product Overview 5-Amino-1MQ (5-amino-1-methylquinolinium) is a selective, membrane-permeable small molecule inhibitor of nicotinamide N-methyltransferase (NNMT)
Insulin resistance and endothelial function are improved after folate and vitamin B12 therapy in patients with metabolic syndrome: Relationship between homocysteine levels and hyperinsulinemia
As body weight decreases, total daily energy expenditure decreases, and the deficit that produced rapid early weight loss narrows
On the other hand, if you are self-administering, then the thigh is a more convenient location