I recently saw this statement in an article about genetically modified foods and supplements.
"Nearly 90% of all the vitamin C is made in China from GMO corn. In fact China is now the world’s leader in Vitamin C production."
IIRC, the same article also mentioned that most vitamin E is also now manufactured from GMO sources.
So if that is the case, where is the best place to look for vitamin C and other supplements that are GMO-free? Labels of many "brands" only specify name/location of the distributor - not the manufacturer (and even if manufactured in the U.S., no way to know where the ingredients came from).
New Chapter vitamins are part of the Non-GMO project. They are expensive but come from all organic, non-GMO sources. They are also formulated to be more easily absorbed by your body than conventional vitamins.