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Fish oil, cod liver

Per 100 g edible portion
Condiments & Oils
Kidney-friendlyBased on CKD stage 3-4 daily limits, Fish oil is rated Kidney-friendly - Phosphorus is the highest at <1% of its limit, still well below 15%.

Phosphorus / Sodium / Potassium (rating basis)

Phosphorus0 mg<1%
Low
Sodium0 mg<1%
Low
Potassium0 mg<1%
Low

About this food

Fish oil belongs to the Condiments & Oils category. Sodium varies hugely across condiments and oils - soy sauce and sauces are sodium-dense while most plant oils are nearly sodium-free. Swapping salty sauces for oils is a practical sodium trick.

Nutrient insight

Fish oil's phosphorus is <1% of the limit, from Processed additive (highest absorption). On a phosphorus-restricted diet, limit how often and how much you eat it.

Other nutrients

Protein0 gNot part of rating
Fiber0 gBeneficial for CKD (core plant-based nutrient)
Alcohol0 gAlcohol-free
Purine93.1 mgModerate purineNot rated · category estimate
Oxalate1.5 mgLow oxalateNot rated · category estimate
Phosphorus source: Processed additive (highest absorption) · Potassium form: Processed or concentrated

Practical tips

A handy approach - Use herbs, lemon or vinegar instead of salty sauces; be aware that low-sodium salt substitutes swap in potassium.

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Related guides

Condiments & OilsKidney-friendly foodsHigh fiber foodsLow sodium foods

Frequently asked questions

Is Fish oil safe for kidney disease?

From a daily-limit standpoint, Fish oil is Kidney-friendly - Phosphorus (<1%) is the highest of the three. Whether it suits you is best confirmed with your doctor.

Why is Fish oil rated Kidney-friendly?

Rating basis: Fish oil's Phosphorus is 0 mg, <1% of the daily limit, judged as Kidney-friendly per the <15% tier.

How much Phosphorus is in Fish oil?

Data: 100 g of Fish oil has Phosphorus 0 mg (<1% of the 1,000 mg limit).

Is Fish oil safe on a low-potassium diet?

Low-potassium question: Fish oil falls below the 300 mg threshold (Potassium 0 mg per 100 g). Whether it fits depends on your daily potassium budget.

How does Fish oil compare to other condiments & oils foods?

Next to other Condiments & Oils options, Fish oil carries less Phosphorus at 0 mg per 100 g. Use your own daily limits, not category labels, as the guide.