Published 30 April 2019 12:20 Are your products allergen-free? Although many of our flavors do not contain ingredients with gluten, we cannot certify that each flavor is gluten-free. Related articles Are your products gluten-free? Are SodaStream plastic carbonating bottles BPA-free? I have an allergy. Can you confirm a certain ingredient is not in your flavor? Are your products kosher? Are any of your flavours vegan?