Hi Annabelle! I asked this same question a few months ago and checked with the Vodka maker in which I was using. According to them it is naturally gluten free due to the process used in making it. I assume because it is distilled vodka and I think most are it is GF. When distilling the molecules etc are too heavy to rise in the steam in the distillation process hence it is purified. My daughter is celiac and she can drink vodka. I hope that helps and if all else fails call the distillery.
I agree with this response. :0)
Don't use herbs or combine herbs with medications or use them during lactation or pregnancy without talking with your healthcare provider.