Red Onions is Safe for kidney disease patients
Good choice for kidney disease patients · Verified against USDA & KDOQI guidelines.
Red Onions — kidney-friendly food
CKD Daily Limit Impact
Phosphorus
4%
Sodium
0%
Potassium
10%
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
5gram ← drag to adjust → 500gram
Calories
44 kcal
Protein
0.9 g
Carbs
9.9 g
Fat
0.1 g
Phosphorus Learn more →
41 mg
4% of 1,000mg daily CKD limit
1 mg
0% of 2,300mg daily CKD limit
Potassium Learn more →
197 mg
10% of 2,000mg daily CKD limit
Verdict: Safe for CKD

Red Onions is a kidney-friendly choice. With low levels of restricted minerals (phosphorus, sodium, potassium), you can include this in your CKD diet without strict portion limits. Still, balance with other foods throughout the day.

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

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.

Where to Buy Red Onions

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