Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 10 g | 14 mg | Safe | |
| 2 x | 20 g | 28 mg | Caution |
| ½ x | 5 g | 7 mg | Safe |
🏷️ Tags
🟢 See all Vegetables rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Should I avoid seaweed if I have kidney stones?
Don't overthink this one. seaweed has 14 mg oxalate per . That's solidly safe territory for kidney stones. The number is from Harvard's latest lab work.
How much oxalate is in seaweed?
The exact figure: 14 mg of oxalate per of seaweed. Works out to 0 mg/100g. This is the number kidney stone patients actually need. Harvard (2024) verified.
Is seaweed a high-oxalate food?
Low. 14 mg per puts seaweed firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.
What can I eat instead of seaweed?
Look at the 'Safe Alternatives' section right below this FAQ. Those foods are all under 25 mg oxalate per serving and in the same category as seaweed. Pick from those.
How reliable is the data for seaweed?
The oxalate number for seaweed — 14 mg per serving — is from Harvard's 2024 lab analysis. That part is solid. The USDA nutrition data (sodium, protein, calcium) is still being matched — we'll update when it's available.