does b12 injections have side effects

does b12 injections have side effects of Injection (Common and Serious) Understanding the B12 Vitamin Shot:

Name: does b12 injections have side effects of Injection (Common and Serious) Understanding the B12 Vitamin Shot:
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Pediatr., 109, 984-988, 1986.

Follow the advice of your health professional

Clothes are fitting slightly looser and my leg muscles look more defined

What is largely agreed on, however, is that B12 deficiency can reduce energy levels and therefore make it harder to stay active and maintain a healthy weight

A B12 injection appointment typically lasts 10 to 15 minutes, including intake paperwork, the injection itself, and a brief post-injection observation period