> Patent is the problem. You cannot patent something found in nature. That is why vitamins were so pooh-poohed for so long. How can you take a huge mark up on something somebody else can also sell?
They have nibbled at that problem by marketing various useless combinations -- not patentable but it provides more shelf space. E.g., not just B-complex, but b-complex+ C, b-complex + calcium, etc. Just another of the wonderful joys of variety. It might help stave off dementia by requiring opening extra neural circuits to get out of the store in less than two hours.