CKD Daily Limit Impact
Based on CKD Stage 3-4 daily limits
🥦 Vegetables
Safe
Red Onions
Nutrition facts & CKD safety rating per 100gram serving
Serving Size
100.0 gram
Calories
44 kcal
Protein
0.9 g
Carbs
9.9 g
Fat
0.1 g
Phosphorus Learn more →
41 mg
Sodium Learn more →
1 mg
Potassium Learn more →
197 mg
Source & Notes
USDA Foundation Foods (fdc_id: 790577)
Frequently Asked Questions
Is Red Onions safe for people with kidney disease?
Red Onions is rated Safe for CKD patients. Good choice for kidney disease patients. With 41.0mg phosphorus, 1.0mg sodium, and 197.0mg potassium per 100.0g serving, it can be enjoyed in normal portion sizes. Always confirm with your nephrologist or renal dietitian.
How much phosphorus is in Red Onions?
A 100.0g serving of Red Onions contains 41mg of phosphorus, which is approximately 4% of the recommended 1,000mg daily limit for CKD Stage 3-4 patients.
How much sodium is in Red Onions?
Per 100.0g serving, Red Onions provides 1mg of sodium — about 0% of the 2,300mg daily sodium limit recommended for kidney patients.
How much potassium is in Red Onions?
Red Onions contains 197mg of potassium per 100.0g serving, equivalent to about 10% of the daily 2,000mg potassium limit for CKD Stage 3-4 patients.
Can dialysis patients eat Red Onions?
Dialysis patients have stricter mineral limits. Given Red Onions is rated Safe (Good choice for kidney disease patients), it is generally a good choice for dialysis patients in normal portions. Your dialysis team can give you personalised portion advice.
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Last updated: April 18, 2026 · Data source: USDA FoodData Central & KDOQI guidelines