does b12 injection make you sleepy Chronic Fatigue: Can Shots Tired? · PA Relief Vitamin B12 Supplements and Injections

[23] The duration of therapy (number of weeks or months of injections) is also determined on a case-by-case basis

Aim for at least half your body weight in ounces of water daily, and increase intake on injection days

However, the effectiveness of B12 injections may vary from person to person

in Cell Metabolism note that SIRT1 activation improves mitochondrial efficiency and promotes a shift toward lipid utilization for energy, which can be especially beneficial in endurance and fat-loss settings (Price et al., Cell Metabolism )

And the difference between "fixing a real deficiency" and "megadosing when you're already fine" is the difference between a genuine improvement and expensive urine