xanthan gum?

Question

Shalom laRav, One of the ingredients in a pill for triglycirides has the following ingredient. The pharmeceutical company when called said that the xanthan may be grown on wheat starch or corn starch as one of the growth mediums. Both are possibilities. 1- Assuming even that it was grown on wheat starch is this a chometz problem? 2- If it is a chometz issue does it require 1/60 to be mevatel? 3- or is it not a problem and the pill can be used for Pesach without concern? It's defined at this website as follows: http://www.fasthealth.com/dictionary/x/xanthan_gum.php xan·than gum n : a polysaccharide that is produced by fermentation of carbohydrates by a bacterium (Xanthomonas campestris) and is a thickening and suspending agent used esp. in pharmaceuticals and prepared foods - called also xanthan . At this site they add the following bit of info. http://whatscookingamerica.net/Q-A/ZanthanGum.htm Zanthan Gum or Xanthan Gum is a powder milled from the dried cell coat of a micro-organism called Xanthonomonas campestris, grown under laboratory conditions. Thank you very much for your time and work!!!