Lebers hereditary optic neuropathy, a rare genetic disorder affecting the optic nerve, has been associated with rapid optic atrophy following cyanocobalamin administration in some cases
Longer-term continuous use (6+ months) has less established safety data, though no significant concerns have emerged
Only your overall health and body composition can answer this question
B12 Shot Side Effects Vitamin B12 shots, which are usually given as hydroxocobalamin or cyanocobalamin, are generally safe if youre deficient
Methods for the analysis of vitamin B 12 in food Several methods have been used to determine the vitamin B 12 content in foods including microbiological assays, chemiluminescence assays, polarographic, spectrophotometric, and high-performance liquid chromatography processes
Can You Get B12 Shots Too Often