Are GNC vitamins synthetic or are they made from 100% natural sources?
http://www.gnc.com/product/index.jsp?pro...
Answer:
Synthetic sources.
I don't trust things from mass market like the things you find at GNC. I'd much rather buy from small private owned herb shops. It's been proven that medicines and energy drinks that say they contain gensing really do not. I just wouldn't trust it.
They are not 100% from natural sources.
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