> Supplements are not paleo...(fish oils are ok to discuss here).

Since fish oils are "OK", please clarify which of the following categories
of supplements are "off-topic" (i.e., non-paleo) and which one's are "OK":

NATURAL
Natural nutritional supplements are nutrients from vegetable, mineral or
animal sources that undergo little or no processing, thereby retaining their
basic nutritional integrity as designed by nature. Natural supplements
include fish liver oil, bee pollen, yeast, garlic, kelp and all the
minerals.

NATURAL SOURCE
Natural source are products that undergo processing, but which are still
obtained from vegetable, mineral, or animal sources.  This includes vitamins
A and D from fish liver oil, vitamin E (d-alpha tocopheryl), lecithin,
digestive enzymes, protein powders and amino acids.

NATURE-IDENTICAL
Nature-identical are laboratory-manufactured nutrients that are identical in
molecular structure and activity in the human body to natural nutrients.
These nutrients are manufactured because the cost or difficulty of
extracting the same nutrients from all-natural sources would make them too
expensive or scarce.  These nutrients include vitamin C (ascorbic acid or
calcium ascorbate) and the B-vitamins.

SYNTHETIC
Strictly synthetic supplements are laboratory-manufactured nutrients that
are in some way dissimilar to the natural nutrient.  Some nutrients like
vitamin E cannot be copied exactly, but their synthetic analogs (dl-alpha
tocopheryl) are inexpensive and so they are used by many manufacturers.

FOOD-GROWN
Food-grown nutritional supplements have raw materials which are produced in
two ways.  Minerals and some pharmaceutically manufactured vitamins are
added to Saccharomyces cervisiae yeast cells.  This mixture is combined with
larger carrier molecules for dissemination throughout the body.  In another
process, vitamins react with extracts containing vegetable proteins.  The
vegetable protein derivatives are then combined with yeast cells.

Rob