50,000 IU all at one time once a week. Our bodies are not designed for that flood of D all of a sudden. We are biologically designed to have D come in smaller amounts. There are carrier molecules that move the D around, and they become saturated, and the excess is stored, where it may not be released.
Everything in our system has carrier limits.
Here are some links to read:
http://www.vitamindcouncil.com/vitaminDToxicity.shtml
This one quotes the RX ergocalciferol as toxic when used inappropriately.
That is D2.
This is a very complete paper that discusses toxicity and risk:
http://www.ajcn.org/cgi/content/full/69/5/842
It is long but worth it.
The data on D is changing rapidly.. I am sure we will see much more detailed recommendations in the near future.
__________________
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.