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Blackberries, frozen, unsweetened

Per 100 g edible portion
Fruits
Kidney-friendlyBased on CKD stage 3-4 daily limits, Blackberries is rated Kidney-friendly - Potassium is the highest at 7% of its limit, still well below 15%.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus30 mg3%
Low
Sodium1 mg<1%
Low
Potassium140 mg7%
Low

About this food

Blackberries belongs to the Fruits category. Potassium levels vary widely across fruits - apples and berries are low-potassium, kidney-friendly picks, while bananas and avocados are high and need portion control. The natural sugar in fruit is usually not the issue; potassium is.

Nutrient insight

The most striking number here is potassium (7%). For patients on potassium restriction, portion size and leaching are the two levers that matter for foods like Blackberries.

Other nutrients

Protein1.2 gNot part of rating
Fiber5 gBeneficial for CKD (core plant-based nutrient)
Sugar (total)10.7 gNatural sugar
Alcohol0 gAlcohol-free
PurineNo dataNot rated · reference for those with high uric acid
OxalateNo dataNot rated · reference for those with kidney stones
Phosphorus source: Natural plant source (lower absorption) · Potassium form: Whole food

Practical tips

A handy approach - For high-potassium fruits, portion control is the main lever - for example, half a banana instead of a whole one.

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Related guides

FruitsKidney-friendly foodsHigh fiber foodsLow sodium foods

Frequently asked questions

Is Blackberries safe for kidney disease?

Blackberries is rated Kidney-friendly: Potassium is 7% of the CKD stage 3-4 limit, the highest item. Individual needs should be discussed with your healthcare team.

Why is Blackberries rated Kidney-friendly?

Blackberries's Potassium content (140 mg) equals 7% of the limit, sitting in the <15% band - that is why it rates Kidney-friendly.

How much Potassium is in Blackberries?

Data: 100 g of Blackberries has Potassium 140 mg (7% of the 2,000 mg limit).

Is Blackberries safe on a low-potassium diet?

Low-potassium question: Blackberries falls below the 300 mg threshold (Potassium 140 mg per 100 g). Whether it fits depends on your daily potassium budget.

How does Blackberries compare to other fruits foods?

Next to other Fruits options, Blackberries carries less Potassium at 140 mg per 100 g. Use your own daily limits, not category labels, as the guide.