There are grape, potato, and corn-based vodkas that are safe for people with a gluten allergy or celiac disease. The gluten is said to be removed in all wheat-based vodkas during the distillation process but small amounts may be left. Therefore, it is best for people with major allergies to just steer clear of wheat-based vodkas. Always read labels and double check with the bartender before having a drink. Below is a list of brewers that offer gluten-free options.