My official answer about ‘All wines are gluten free!’ is NO! they are not! How do I know? By my own diligent work contacting wineries and asking specific questions about aging process and fining agents. NOT all wineries will say they can guarantee 100% gluten free. And yes, both my husband and I have had our ‘typical gluten symptoms’ from certain wines. This has happened on many occasions and at home and in restaurants—so it’s not just a dirty glass (which has made us sick too!). In fact, someone posted a picture on Facebook of wines in Europe that actually have Allergy statements on them—with actual pictures of the wine bottles stating there is Gluten in them! We drink Peter Vella box wine 100% safely—-they age in stainless steel casks and only use animal based fining agents! Black Box wines do not guarantee GF and we have most definitely gotten sick from them. As has another Celiac friend, who was very grateful that we enlightened her about Black Box because she couldn’t figure out why she was feeling so bad. I wish the US could label as honestly as Europe and Australia do for wine.

A brief study was done on whether this would come through in the wine, and some types of gluten did leave detectable levels of gluten in the wine:
http://www.ncbi.nlm.nih.gov/pubmed/21375303

Just on the ‘glutened by wine or not’ issue, I have been glutened by wine as well. I get neurological symptoms as opposed to gut problems, so at least it is easy to determine whether I’m reacting to an allergen (which DOES give me gut problems) or the gluten (which causes severe vertigo).

Because the symptoms are so severe, I always trial new products by themselves, so I don’t believe it was something other than the wine.

However, I should say that I’m very sensitive to gluten, too. There are numerous celiacs in the family and while we all go down when there is major gluten contamination, there are many products that they can all have which make me have a gluten reaction.