In the United States the FDA considers anything that ranges from 0.0% to 0.5% ABV a “non-alcoholic beer,” even though it may have small traces of alcohol. RationAle beer will always contain less than .5% alcohol, regardless of beer style.
No, like most beers, Rationale is NOT Gluten Free.
RationAle beers are generally low-calorie, low-carb, and low sugar. Please see the nutrition labels on each beer's product pages for exact amounts.