Could you tell me is yeast a wheat product? I know yeast extract is. I am allergic to wheat. Thanks
Yeast is not at all related to wheat. Yeast is a type of fungus (a very tiny one, consisting of just one cell), where as wheat comes from the seeds of a plant (a type of grass in fact, not to be confused with wheatgrass, which is related to wheat but not actually wheat).
In general, check ingredients for wheat and yeast. The addition of one does not imply the use of the other.
I hope this answers the question. Feel free to elaborate in the comments section.