A study in the Journal of Clinical Biochemistry says, Vitamin B12 deficiency can cause big problems with nerves and blood. Vitamin B12 is key for making DNA, fatty acids, and energy. Source: Journal of Clinical Biochemistry Common Signs of Deficiency A Vitamin B12 shortage can show in many ways, like: Fatigue and weakness Numbness or tingling in hands and feet Difficulty walking Mood changes, such as depression Spotting these signs early is key for quick action
Potential injection site reactions Compounded formulations sometimes cause more injection site irritation than single-ingredient products
It is not intended for human or veterinary use, and must not be used for diagnostic, therapeutic, or clinical purposes
Is oral bioavailability established
J Clin Invest 99 : 25382544 Ranke MB (2005) Insulin-like growth factor-I treatment of growth disorders, diabetes mellitus and insulin resistance