is b12 pills vs b12 injections Best Vitamin Injection Site: Administering Shots What Color is Vitamin B12

No antibody formation When the immune system recognizes a foreign protein and produces antibodies against it, this can reduce the compound effectiveness over time and potentially cause allergic reactions

Vitamin B12 deficiency can cause symptoms such as fatigue, weakness, numbness or tingling in the hands and feet, balance problems, and memory difficulties

I emailed with the natural doctor at the B12 office to find out if she knew of any post menopausal women with similar reactions and was told no

(2014) Safety and Metabolism of AOD9604, a Novel Nutraceutical Ingredient for Improved Metabolic Health J Endocrinol Metab 4(1-2):114

I am in a way lucky as the best I could hope for in the USA was loading once a month and oral B12 and folic acid

Possible temporary reactions include mild soreness at the injection site, nausea, headache, or dizziness for a day or two, and occasional minor bruising