b12 injections z-track Learn the Method for Intramuscular How to Administer an Intramuscular
Description
What they found: Mean weight loss: 2.6 kg vs 2.3 kg placebo , a difference of only 0.3 kg (1 %) Statistically non-significant Clinically unsatisfactory for the obesity indication Safety profile remained favorable Why it matters: The study stopped the development of AOD-9604 as a drug

Jacques, and J
If patients are to start Cyanocobalamin Nasal Spray before having tolerated cyanocobalamin parenterally, consider administering an intradermal test dose of parenteral vitamin B12 to patients suspected of cyanocobalamin hypersensitivity [see Dosage and Administration (2.1)]

B12 injections are indicated for patients with documented deficiency, including those with pernicious anaemia, malabsorption disorders, following gastric surgery, or with neurological symptoms suggesting B12 deficiency

Its very important to have placebo-controlled studies like this one, Paul Wang, Autism Speaks' senior vice president for medical research and pediatrician, said