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Description
Some individuals may experience mild injection-site reactions (e.g., redness, swelling) or occasional headaches

J Interferon Cytokine Res

The Myth of B12 as a Performance Enhancer The Mayo Clinic weighs in definitively on this topic: Some researchers have studied vitamin B-12 to find out if it can raise energy and endurance during exercise

This condition can make life hard, causing constant pain, numbness, and tingling

This is what makes once-weekly dosing possible and what makes the compound so effective compared to the naturally occurring hormone
Journal of Orthopaedic Surgery and Research (2019)
