You wrote: "Another one I have been researching for 5 yrs is
vit(hormone)d3.  According to the USDA  website pill,capsule,liquid etc
form can be a mouse poison."

As a health resacher, you may be interested in the following information:

>From <http://en.wikipedia.org/wiki/Rodenticide> :

Calciferols (vitamins D), cholecalciferol (vitamin D3) and ergocalciferol
(vitamin D2) are used as rodenticides. They are toxic to rodents for the
same reason they are important to humans: they affect calcium and phosphate
homeostasis in the body. Vitamins D are essential in minute quantities (few
IUs per kilogram body weight daily, only a fraction of a milligram), and
like most fat soluble vitamins, they are toxic in larger doses, causing
hypervitaminosis. If the poisoning is severe enough (that is, if the dose
of the toxin is high enough), it leads to death.
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>From a conversation at <http://www.marshallprotocol.com/forum39/11446.html>
:

40,000,000 IU / gram* 0.075% = 30,000 IU / gram of rodent killer

2-3 grams is sufficient to kill a mouse.
That is 75,000 IU is sufficient to kill a mouse.

Humans and mice are not the same, but for comparison,
a mouse is said to weigh about 25 grams
and a person might weigh around 70 kilograms.

If the dosage by weight is an appropriate measure for toxicity...
an equivalent amount for a human would be 2,100,000,000 IU.
***********

Let's say a 75 kg human instead.

75 kg / 25 gram = 3000

75000 x 3000 = 150 000 000 IU

Or to put it in more simple terms, 2 grams times 3000 = 6 kg of 0.075% D
vit.
= 4.5 gram of 100% D vit.
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