The typical injection dose is 1000mcg.
I'd do that, and not the 500mcg you stated above.
If you are doing injections it is probably cyanocobalamin?
That is a synthetic version, that has been replaced by Methylcobalamin(has no cyanide). Oral daily is far more natural and effective than injections. Some people cannot tolerate the cyanide portion of cyano form and others cannot convert it properly.
Frequent injections of cyano raise this specter of potential of intolerance to cyanide.
__________________
All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
************************************
.
Weezie looking at petunias 8.25.2017
****************************
These forums are for mutual support and information sharing only. The forums are not a substitute for medical advice, diagnosis or treatment provided by a qualified health care provider. Always consult your doctor before trying anything you read here.