Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
⚠️ Moderate Sodium
Seaweed has 233 mg sodium per 100g. While not critically high, kidney stone patients should monitor sodium intake as excess can raise urinary calcium.
This entry is one flavor variant of the same base product, and flavoring generally shifts oxalate far less than form and processing do. Dulse flakes Seaweed sits at 14 mg per serving, at the high end of the family. Individual measured values below are the numbers to compare. Related forms in this family: Nori Seaweed (10 mg), Agar Seaweed (1 mg).
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 10 g | 14 mg | Low Oxalate | |
| 2 x | 20 g | 28 mg | Moderate Oxalate |
| ½ x | 5 g | 7 mg | Low Oxalate |
🏷️ 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?
Short answer: yes. Longer answer: at 14 mg per , Seaweed is one of the safer things you can eat if you're watching oxalate. Harvard T.H. Chan SPH measured this directly.
What's the oxalate content of Seaweed?
The lab result: 14 mg per (10g serving). That's 140 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.
Is Seaweed high in oxalates?
Low. 14 mg per puts Seaweed firmly in the low-oxalate category. Safe for regular eating if you're managing kidney stones.
What are the best low-oxalate alternatives to Seaweed?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Seaweed. Grab one of those and you dodge the oxalate while keeping similar flavors.
How much sodium does Seaweed have?
233 mg sodium per 100g in Seaweed. Well under the 460 mg threshold. One less thing on your kidney stone checklist.