are there side effects to b12 injections Vitamin B12 Injection Side Effects -

Why Joint Aches Occur with B12 Supplementation When joint discomfort does arise in temporal association with vitamin B12 therapy, several possible explanations may be considered, though none represent a direct toxic or pharmacological effect of cobalamin itself

Take whatever approach works best for your situation

Have difficulty absorbing B12 through food or supplements

Still, side effects from B12 supplements are possible, especially at higher doses, and include: Headache Nausea Vomiting Fatigue Weakness Diarrhea Tingling in the hands and feet Nasal spray Vitamin B12 is also available in a nasal spray

Regarding FDA approval: because this is a compounded product, it is not directly FDA-approved

Pregnancy, breastfeeding and cyanocobalamin