I would call since this is more of a questioning the customers type of thing
If you really want that answer I would ask to talk to the manager who is in charge of purchasing as this store is notorious for clueless staff answering questions like that with any answer that comes to mind. Steady store with overpriced but quality goods, but severe shortage of knowledgeable staff.
Okay whatever that is never heard of it in my life I would agree with the other person and call them and find out what's if you Google it it will probably tell you where to go to get it may have more than one place to get it not just Whole Foods
Try Chamberlain's or small organic vitamin shoppes.... If all else fails: Amazon.
I did they do not sell it.
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