can phlebotomists give b12 injections Injection Dosage and Frequency: 7 Guidelines for Adults B12 Shots: Benefits, Uses, Safety,

These symptoms typically resolve within 24 hours.* Not for Everyone: This therapy is not recommended for individuals allergic to cobalamin (B12), those with liver disease, or those currently taking medications that interact with methyl donors

There could be a variety of reasons

PubMed: 20219669 AOD 9604 Reduces Leptin Levels and Improves Leptin Sensitivity in High-Fat Diet Obese Rats animal Liu B, Duong T, Nusser J, et al

Its important to note that lipotropic injections should be used as part of a comprehensive weight loss or wellness program, which may include a healthy diet, regular exercise, and other lifestyle modifications