** Shares of food supplements maker ChromaDex Corp CDXC.O
fall as much as 28.3% to $1.32 premarket in volume spike
** CDXC says on Nov. 4, U.S. FDA declared that the key
ingredient in the production of company's flagship product Tru
Niagen cannot be sold as a dietary supplement in the U.S.
urn:newsml:reuters.com:*:nBw5zHhVRa
** Company was not immediately available for comment on
impact of the FDA decision on Tru Niagen production
** Up to last close, stock down 50.8% YTD
(Reporting by Nandhini Srinivasan in Bengaluru)
((nandhini.srinivasan@thomsonreuters.com))