There is no upper limit to B12 taken as a supplement, listed by the FDA.
Also orally only 1% is absorbed per dose. So while it looks like alot on paper, it is really small in reality.
Ideally it is 1%...if you take it on an empty stomach. If you don't, nothing may be absorbed.
__________________
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.