On the other hand, those with methylation issues (MTHFR gene mutations carriers, for instance) do best on methylated B12, that is, methylcobalamin
Although the amount of cyanide in cyanocobalamin is small, individuals with compromised detoxification pathways may benefit more from Methylcobalamin
Signs that you may need a B12 shot include fatigue, pale skin, weakness, shortness of breath and loss of appetite
So, it may play a role in conditions such as Alzheimer's disease and stroke
However, for some patients, this may make sense, especially those who have not gotten the results they want with other options
Cyanocobalamin Dogs & Cats: 0.25 to 0.5 mL