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 |
|---|---|---|---|
| 1 tsp | 2 g | 1 mg | Safe |
| 2 x 1 tsp | 4 g | 2 mg | Safe |
| ½ x 1 tsp | 1 g | 0.5 mg | Safe |
🏷️ Tags
🟢 See all Condiments rated Safe for kidney stones →
🔗 Related Foods
🟢 Safe alternatives (recommended)
⚠️ Other foods in this category to watch
❓ Frequently Asked Questions
Is Mustard seed safe for kidney stones?
Short answer: yes. Longer answer: at 1 mg per 1 tsp, Mustard seed is one of the safer things you can eat if you're watching oxalate. Harvard T.H. Chan SPH measured this directly.
How much oxalate is in Mustard seed?
The lab result: 1 mg per 1 tsp (2g serving). That's 50 mg per 100g. Harvard's ion chromatography analysis, 2024. Not crowdsourced, not estimated.
Is Mustard seed high in oxalates?
It's low. 1 mg per 1 tsp is well under the 25 mg danger line. Mustard seed is not the food you need to worry about.
What are the best low-oxalate alternatives to Mustard seed?
There are almost always safer swaps in the same food family. For Mustard seed, 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 Mustard seed?
The oxalate number for Mustard seed — 1 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.