Kate Naturals Brewers Yeast Powder for Lactation Support & Nursing Moms. Debittered Brewer's Yeast for Lactation Cookies & Lactation Supplement (12oz, Gluten Free, Non-GMO) is a Cooking & Baking option for everyday use, business supply needs, resale shelves, or household stocking. Review product size, pack count, and shipping details before checkout.