Yes they do. I just mostly worry about what their packaging facilities may be. It’s been my experience that many supplementation companies are already fairly shady and the equivalent of modern day snake oil salesmen. Let alone having to deal with it as someone who has celiac. I’ll probably end up guinea pigging myself and reporting back here. There whole premise is that it’s supposed to be completely natural: https://www.amazon.com/gp/aw/d/B00NBDMN8U/ref=mp_s_a_1_1_a_it?ie=UTF8&qid=1541796695&sr=8-1-spons&keywords=naked+protein&psc=1
Naked Whey. One of the few whey protein powders I've found that contain ONLY whey in the ingredients list. Its not cheap though.