can vitamin b12 be injected subcutaneously Choosing the Right Needle and Syringe for Injections: A Complete Guide Best Vitamin B12 Injection Sites:

How We Approach Weight-Loss Peptides Weight-loss peptides do a narrower, more specific job than a GLP-1: instead of suppressing appetite, they protect lean mass, target visceral fat, and improve how your cells burn fuel

via Healthline

[2] For this reason, elevated serum homocysteine over 15 micromol/L and methylmalonic acid (MMA) over 0.271 micromol/L are considered better indicators of B 12 deficiency, rather than relying only on the concentration of B 12 in blood

These devices propel liquid through the skin into the fat tissue using high-pressure, allowing you to inject B12 or any other liquid injectable without needles

It really depends on what type of wrong youre talking about

In preclinical adipocyte models, studies suggest this shift in metabolic flux is associated with changes in lipogenic gene expression, including reduced expression of key adipogenic transcription factors