Zwieback Nutrition Facts
FoodData Central Updated 6 April 2026
Zwieback contains 42.6 calories, 1g protein, 7.4g carbs, and 1g fat. Zwieback is listed in the protein foods category that is calorie-dense. It is a good source of protein and rich in potassium.
42.6
cal
7.4g
carbs
1g
protein
1g
fat
0.3g
fiber
1.3g
sugar
Vitamins in Zwieback
Per Rusk ~10g
Vitamin A
1.6mcg
<1%
Vitamin C
0.53mg
<1%
Vitamin E
0.24mg
2%
Vitamin K
0.09mcg
<1%
Vitamin B6
8mcg
<1%
Thiamin (B1)
0.02mg
2%
Riboflavin (B2)
0.02mg
2%
Niacin (B3)
0.13mg
<1%
Folate
8.7mcg
2%
Minerals in Zwieback
Per Rusk ~10g
Learn More About Zwieback
Similar Foods
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Verified Nutrition Data
Trusted & Verified Nutritional Information
All nutritional data on Food Index is sourced from official U.S. government databases and verified by nutrition experts at leading federal agencies.
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