>- Is that it's best to take vitamins/minerals in their natural form if you can.

Absolutely agreed!

>- If synthetic your body cannot absorb them.

False, it has been proven through radioactive tagging that artificial vitamins are absorbed. ALso, it is proven that pure systhetic vitamin C will remove scurvey.

Also, synthetic thiamine will remove scurvey.

>- Take vit. C for example, if synthetic not only does your body not absorb but it puts extra work on your kidneys and liver to excrete this stuff from your system.

Completely contradictory. If it is not absorbed, how can it strain any organ other than the intestines.

Please consider the following points.

If vitamin C or any B vitamin is taken in oral synthetic form, that vitamin will show up in the urine within minutes. Also metabolic by-products will appear. in some but not all cases.

The real importance of taking vitamins through natural sources are the many other natural compounds that are absorbed with and assist the function of the vitamins.