Yes, but it should not if it is injected properly and you take the proper post-injection precautions
Most clients describe the sensation as nothing more than a small pinch
Improved energy levels : Provides a noticeable increase in energy, keeping you motivated and active
note that daily dosing is only for the activation phase of the GLOW protocol (weeks 1-4) , decreasing to 5x per week for the remodeling phase (weeks 5-8), and further reduced to 2-3x per week during maintenance (weeks 9-12)
Randomly getting B12 injections because you think you might be low is an expensive gamble
In mouse models of insulin resistance, it significantly inhibits NNMT activity in liver and muscle, reduces NAM methylation, increases intracellular NAD+, activates the SIRT1 pathway, promotes phosphorylation of insulin receptor substrate 1 (IRS1), enhances insulin signaling, improves insulin sensitivity, and increases glucose uptake and utilization