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 |
|---|---|---|---|
| 4 g | 0 mg | Safe | |
| 2 x | 8 g | 0 mg | Safe |
| ½ x | 2 g | 0 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
Is seaweed safe for kidney stones?
No red flags here. Just 0 mg per — well below the 25 mg danger line. You can keep seaweed in your regular rotation. Data comes from Harvard (2024).
What's the oxalate content of seaweed?
The lab result: 0 mg per (4g serving). That's 0 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.
Is seaweed high in oxalates?
Low. 0 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?
There are almost always safer swaps in the same food family. For seaweed, check the related foods section below — the green-marked ones are your best bets. All verified by Harvard (2024).
How reliable is the data for seaweed?
Oxalate: very reliable (Harvard 2024 lab measurement). Other nutrients: still being matched to USDA data. The oxalate figure is what matters for a kidney stone decision, and that one's solid.