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Vitamin B12 shots help replenish essential nutrients that support energy metabolism, nerve signaling, and healthy red blood cell production, which may ease ongoing fatigue

For most patients without severe malabsorption, sublingual B12 is a reasonable and convenient alternative to injections

This extends the window of enhanced fat oxidation initiated by the peptide

Low B12 doesnt directly cause weight gain, but chronic fatigue and slow metabolism from a deficiency may lead to reduced activity levels, contributing to weight gain over time

Signs include feeling very tired, weak, and having nerve problems

The Black Box warnings, full side effect list, and drug interaction details remain in the Safety Details section below