Eli5: [ELI5] What qualifies a chemical or mineral as a “vitamin?” Are all vitamins good for you in proper dosages?
In: Biology
The first part of your question has been answered, so let me jump to the 2nd.
Most inexpensive vitamins are coal tar derivatives. A performance test performed by a NY state or local college (sorry, I learned about this in the 90s and don’t recall most of the details) on their athletic teams showed that players consuming the cheap OTC vitamins performance degraded, but recovered when they stopped using them.
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