Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
🚨 High Sodium Alert
Seaweed contains 872 mg sodium per 100g — well above the recommended limit for kidney stone patients. High sodium intake can increase calcium in urine, raising stone risk.
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1/2 cup | 10 g | 0 mg | Safe |
| 2 x 1/2 cup | 20 g | 0 mg | Safe |
| ½ x 1/2 cup | 5 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
Should I avoid Seaweed if I have kidney stones?
No red flags here. Just 0 mg per 1/2 cup — 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?
Quick math: 1/2 cup of Seaweed = 0 mg oxalate. 100g = 2 mg. Both numbers come from Harvard's latest lab measurements. Not AI, not a database, actual lab work.
Is Seaweed low or high oxalate?
It's low. 0 mg per 1/2 cup is well under the 25 mg danger line. Seaweed is not the food you need to worry about.
What are the best low-oxalate alternatives to 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).
Is Seaweed high in sodium?
Sodium warning: Seaweed packs 872 mg per 100g. That's high enough to push extra calcium into your urine — a stone risk you don't need. Pick low-sodium versions if they exist.