Jacobsen's Zwieback Snack Toast nutrition facts

One serving of Jacobsen's Zwieback Snack Toast (1 serving) has 40 calories, which works out to 400 calories per 100 g. That is about 2% of a 2,000-calorie day.

Not especially. It has 1 g of protein per serving, and protein supplies 12% of its calories. Foods where protein provides 30% or more of calories are generally considered protein-dense.

It is hard to fit into a strict keto diet. One serving has 5 g of net carbs and 74% of its calories come from carbohydrates, while most keto plans cap net carbs at 20–50 g per day.

50 mg per serving, which meets the FDA definition of low sodium (140 mg or less).

1 g of total sugars per serving. Labels list total sugars, which include natural sugars from fruit and milk as well as any added sugars.