Oxalate <25 mg/serving
Oxalate 25-99 mg/serving
Oxalate ≥100 mg/serving
📊 Nutrition at a Glance
How the form changes the number: preparation is the real variable across this family. Boiling leaches a meaningful share of soluble oxalate into the cooking water — commonly 30-50% for plant foods — while raw and dry-heat forms keep essentially all of it, so the same base food can land in different brackets depending on how it is cooked. This page tracks Shiitake Mushrooms at 2 mg per serving, in the middle of the family range. Related forms in this family: Portobello Mushrooms (2 mg), Mushrooms Variety (Variety 2) (4 mg), Mushrooms white (1 mg).
📏 Oxalate by Serving Size
| Serving | Weight | Oxalate | Verdict |
|---|---|---|---|
| 1 cup | 145 g | 2 mg | Low Oxalate |
| 2 x 1 cup | 290 g | 4 mg | Low Oxalate |
| ½ x 1 cup | 72 g | 1 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
Can I eat Mushrooms with kidney stones?
It's fine. Mushrooms has 2 mg of oxalate per 1 cup. That's low enough that kidney stone patients don't really need to worry about it. Harvard did the measuring, not us.
What's the oxalate content of Mushrooms?
Quick math: 1 cup of Mushrooms = 2 mg oxalate. 100g = 1.4 mg. Both numbers come from Harvard's latest lab measurements. Not AI, not a database, actual lab work.
Is Mushrooms low or high oxalate?
It's low. 2 mg per 1 cup is well under the 25 mg danger line. Mushrooms is not the food you need to worry about.
What are the best low-oxalate alternatives to Mushrooms?
Substitutes exist. The safe alternatives listed below are all low-oxalate foods in the same family as Mushrooms. Grab one of those and you dodge the oxalate while keeping similar flavors.
How reliable is the data for Mushrooms?
The oxalate number for Mushrooms — 2 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.