Published March 26, 2019 20:25 Are your products gluten-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 allergen-free? Are your flavors sweetened? Does your tonic contain quinine? My sparkling water is not fizzy enough. Help! The fruit flavor ingredients say "natural ingredients". What does that even mean?