Zwieback Toast is Moderate for kidney disease patients
Eat in moderate portions if you have CKD · Verified against USDA & KDOQI guidelines.
Zwieback Toast — kidney-friendly food
CKD Daily Limit Impact
Phosphorus
6%
Sodium
10%
Potassium
15%
Based on CKD Stage 3-4 daily limits
🍚 Grains & Starches Moderate

Zwieback Toast

Nutrition facts & CKD safety rating per 100gram serving

Serving Size 100.0 gram
5gram ← drag to adjust → 500gram
Calories
426 kcal
Protein
10.1 g
Carbs
74.2 g
Fat
9.7 g
Phosphorus Learn more →
55 mg
6% of 1,000mg daily CKD limit
227 mg
10% of 2,300mg daily CKD limit
Potassium Learn more →
305 mg
15% of 2,000mg daily CKD limit
Verdict: Moderate for CKD

Zwieback Toast is acceptable in moderate portions. Keep an eye on your daily totals — pair it with low-mineral foods to stay within the recommended 1,000mg phosphorus, 2,300mg sodium, and 2,000mg potassium daily limits.

Always confirm with your nephrologist or renal dietitian — individual CKD stages and lab values vary.

Source & Notes

USDA FNDDS (foodCode: 51188500)

Frequently Asked Questions

Is Zwieback Toast safe for people with kidney disease?
Zwieback Toast is rated Moderate for CKD patients. Eat in moderate portions if you have CKD. With 55.0mg phosphorus, 227.0mg sodium, and 305.0mg potassium per 100.0g serving, moderate portions are usually fine, but watch your daily totals. Always confirm with your nephrologist or renal dietitian.
How much phosphorus is in Zwieback Toast?
A 100.0g serving of Zwieback Toast contains 55mg of phosphorus, which is approximately 6% of the recommended 1,000mg daily limit for CKD Stage 3-4 patients.
How much sodium is in Zwieback Toast?
Per 100.0g serving, Zwieback Toast provides 227mg of sodium — about 10% of the 2,300mg daily sodium limit recommended for kidney patients.
How much potassium is in Zwieback Toast?
Zwieback Toast contains 305mg of potassium per 100.0g serving, equivalent to about 15% of the daily 2,000mg potassium limit for CKD Stage 3-4 patients.
Can dialysis patients eat Zwieback Toast?
Dialysis patients have stricter mineral limits. Given Zwieback Toast is rated Moderate (Eat in moderate portions if you have CKD), dialysis patients should eat smaller portions and monitor their weekly intake. Your dialysis team can give you personalised portion advice.

More Grains & Starches

Last updated: April 18, 2026 · Data source: USDA FoodData Central & KDOQI guidelines